diff --git a/Gtk4/gtk155_applaunch/.vscode/settings.json b/Gtk4/gtk155_applaunch/.vscode/settings.json
new file mode 100644
index 0000000..6cdd3ad
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/.vscode/settings.json
@@ -0,0 +1,6 @@
+{
+    "C_Cpp.default.configurationProvider": "ms-vscode.cmake-tools",
+    "files.associations": {
+        "cstring": "cpp"
+    }
+}
\ No newline at end of file
diff --git a/Gtk4/gtk155_applaunch/CMakeLists.txt b/Gtk4/gtk155_applaunch/CMakeLists.txt
new file mode 100644
index 0000000..8bf97f1
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/CMakeLists.txt
@@ -0,0 +1,72 @@
+set(CMAKE_CXX_STANDARD 17)
+cmake_minimum_required(VERSION 3.5.0)
+project(gtk155_applaunch VERSION 1.0.0)
+
+list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/../../GCR_CMake/macros)
+include(GlibCompileResourcesSupport)
+
+include(CTest)
+enable_testing()
+
+set(CPACK_PROJECT_NAME ${PROJECT_NAME})
+set(CPACK_PROJECT_VERSION ${PROJECT_VERSION})
+
+include(CPack)
+include_directories(.)
+include_directories(..)
+
+#Find PkgConfig to use gtkmm3
+find_package (PkgConfig REQUIRED)
+pkg_check_modules (GTK4 REQUIRED gtk4)
+include_directories (${GTK4_INCLUDE_DIRS})
+link_directories (${GTK4_LIBRARY_DIRS})
+
+#Find Gettext
+# find_package (Gettext REQUIRED)
+# set(PO_DIR ${CMAKE_BINARY_DIR}/po/zh_CN/LC_MESSAGES)
+
+#Source files
+set(SOURCE_FILE src/main.cpp src/Applauncher.cpp src/AppView.cpp)
+
+#Compile Resource
+
+# set(RESOURCE_LIST
+#     )
+
+# compile_gresources(RESOURCE_FILE
+#                    XML_OUT
+#                    TYPE EMBED_C
+#                    RESOURCES ${RESOURCE_LIST}
+#                    PREFIX "/org/gtk/daleclack"
+#                    SOURCE_DIR ${PROJECT_SOURCE_DIR}/res)
+               
+# Add a custom target to the makefile. Now make builds our resource file.
+# It depends on the output RESOURCE_FILE.
+
+# add_custom_target(resource ALL DEPENDS ${RESOURCE_FILE})
+
+#For win32 platform,use rc resource and .ico icon
+if(WIN32)
+	SET(CMAKE_RC_COMPILER windres)
+	set(app_WINRC ../icon.rc)
+	set_property(SOURCE ../icon.rc APPEND PROPERTY
+        OBJECT_DEPENDS ${PROJECT_SOURCE_DIR}/../icon.ico
+        )
+	add_executable(${PROJECT_NAME} ${app_WINRC} ${SOURCE_FILE})
+    add_custom_command( TARGET ${PROJECT_NAME} 
+                        COMMAND echo * > ${CMAKE_BINARY_DIR}/.gitignore
+                        COMMAND echo **/* > ${CMAKE_BINARY_DIR}/.hgignore)
+else()
+	add_executable(${PROJECT_NAME} ${SOURCE_FILE})
+    add_custom_command( TARGET ${PROJECT_NAME}
+                        COMMAND echo \"*\" > ${CMAKE_BINARY_DIR}/.gitignore
+                        COMMAND echo \"**/*\" > ${CMAKE_BINARY_DIR}/.hgignore)   
+endif(WIN32)
+
+#Add command to generate .gitignore and .mo files
+# add_custom_command( TARGET ${PROJECT_NAME} 
+#                     COMMAND mkdir -p ${PO_DIR}
+#                     COMMAND ${GETTEXT_MSGFMT_EXECUTABLE} ${CMAKE_SOURCE_DIR}/po/zh_CN.po -o ${PO_DIR}/${PROJECT_NAME}.mo)
+
+SET (CMAKE_EXTRA_CXX_FLAGS ${GTK4_CFLAGS_OTHER})
+target_link_libraries (${PROJECT_NAME} ${GTK4_LIBRARIES} -lpthread)
diff --git a/Gtk4/gtk155_applaunch/README b/Gtk4/gtk155_applaunch/README
new file mode 100644
index 0000000..ca496a2
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/README
@@ -0,0 +1,5 @@
+# README of My Reminder
+This simple application is a reminder for the date, 
+and the window show the days left for the deadline set by user
+
+The reminded date and color of text can be changed by preferences dialog.
\ No newline at end of file
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-eject-dark.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-eject-dark.svg
new file mode 100644
index 0000000..d174abd
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-eject-dark.svg
@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#dedede;
+      }
+      </style>
+  </defs>
+ <path style="fill:currentColor;fill-opacity:1;stroke:none" 
+     d="M 8 4 L 3 10 L 13 10 L 8 4 z M 3 11 L 3 12 L 13 12 L 13 11 L 3 11 z "
+     class="ColorScheme-Text"
+     />
+</svg>
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-eject.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-eject.svg
new file mode 100644
index 0000000..73841e7
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-eject.svg
@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#363636;
+      }
+      </style>
+  </defs>
+ <path style="fill:currentColor;fill-opacity:1;stroke:none" 
+     d="M 8 4 L 3 10 L 13 10 L 8 4 z M 3 11 L 3 12 L 13 12 L 13 11 L 3 11 z "
+     class="ColorScheme-Text"
+     />
+</svg>
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-mount-dark.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-mount-dark.svg
new file mode 100644
index 0000000..b1fbe42
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-mount-dark.svg
@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#dedede;
+      }
+      </style>
+  </defs>
+ <path style="fill:currentColor;fill-opacity:1;stroke:none" 
+       d="M 3 4 L 8 10 L 13 4 L 3 4 z M 3 11 L 3 12 L 13 12 L 13 11 L 3 11 z "
+     class="ColorScheme-Text"
+     />
+</svg>
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-mount.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-mount.svg
new file mode 100644
index 0000000..cad6178
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-mount.svg
@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#363636;
+      }
+      </style>
+  </defs>
+ <path style="fill:currentColor;fill-opacity:1;stroke:none" 
+       d="M 3 4 L 8 10 L 13 4 L 3 4 z M 3 11 L 3 12 L 13 12 L 13 11 L 3 11 z "
+     class="ColorScheme-Text"
+     />
+</svg>
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playback-pause-dark.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playback-pause-dark.svg
new file mode 100644
index 0000000..70309bd
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playback-pause-dark.svg
@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#dedede;
+      }
+      </style>
+  </defs>
+ <path style="fill:currentColor;fill-opacity:1;stroke:none"
+       d="m 3 3 0 10 4 0 0 -10 z m 6 0 0 10 4 0 0 -10 z"
+     class="ColorScheme-Text"
+     />
+</svg>
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playback-pause.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playback-pause.svg
new file mode 100644
index 0000000..2a9a7a5
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playback-pause.svg
@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#363636;
+      }
+      </style>
+  </defs>
+ <path style="fill:currentColor;fill-opacity:1;stroke:none"
+       d="m 3 3 0 10 4 0 0 -10 z m 6 0 0 10 4 0 0 -10 z"
+     class="ColorScheme-Text"
+     />
+</svg>
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playback-start-dark.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playback-start-dark.svg
new file mode 100644
index 0000000..8bcc4ad
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playback-start-dark.svg
@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#dedede;
+      }
+      </style>
+  </defs>
+ <path style="fill:currentColor;fill-opacity:1;stroke:none"
+       d="m 3 3 0 10 10 -5 z"
+     class="ColorScheme-Text"
+     />
+</svg>
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playback-start.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playback-start.svg
new file mode 100644
index 0000000..28b7b44
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playback-start.svg
@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#363636;
+      }
+      </style>
+  </defs>
+ <path style="fill:currentColor;fill-opacity:1;stroke:none"
+       d="m 3 3 0 10 10 -5 z"
+     class="ColorScheme-Text"
+     />
+</svg>
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playback-stop-dark.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playback-stop-dark.svg
new file mode 100644
index 0000000..6a3528c
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playback-stop-dark.svg
@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#dedede;
+      }
+      </style>
+  </defs>
+ <path style="fill:currentColor;fill-opacity:1;stroke:none"
+       d="m 3 3 0 10 10 0 0 -10 z"
+     class="ColorScheme-Text"
+     />
+</svg>
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playback-stop.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playback-stop.svg
new file mode 100644
index 0000000..7ba228d
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playback-stop.svg
@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#363636;
+      }
+      </style>
+  </defs>
+ <path style="fill:currentColor;fill-opacity:1;stroke:none"
+       d="m 3 3 0 10 10 0 0 -10 z"
+     class="ColorScheme-Text"
+     />
+</svg>
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-append-dark.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-append-dark.svg
new file mode 100644
index 0000000..c363da5
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-append-dark.svg
@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#dedede;
+      }
+      </style>
+  </defs>
+ <path style="fill:currentColor;fill-opacity:1;stroke:none" 
+     d="M 3 2 A 1 1 0 0 0 2 3 A 1 1 0 0 0 3 4 A 1 1 0 0 0 4 3 A 1 1 0 0 0 3 2 z M 5 2 L 5 3 L 7 3 L 13 3 L 13 2 L 7 2 L 5 2 z M 5 4 L 5 5 L 7 5 L 11 5 L 11 4 L 7 4 L 5 4 z M 10 7 L 10 10 L 7 10 L 7 11 L 10 11 L 10 14 L 11 14 L 11 11 L 14 11 L 14 10 L 11 10 L 11 7 L 10 7 z M 3 8 A 1 1 0 0 0 2 9 A 1 1 0 0 0 3 10 A 1 1 0 0 0 4 9 A 1 1 0 0 0 3 8 z "
+     class="ColorScheme-Text"
+     />
+</svg>
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-append.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-append.svg
new file mode 100644
index 0000000..41152de
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-append.svg
@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#363636;
+      }
+      </style>
+  </defs>
+ <path style="fill:currentColor;fill-opacity:1;stroke:none" 
+     d="M 3 2 A 1 1 0 0 0 2 3 A 1 1 0 0 0 3 4 A 1 1 0 0 0 4 3 A 1 1 0 0 0 3 2 z M 5 2 L 5 3 L 7 3 L 13 3 L 13 2 L 7 2 L 5 2 z M 5 4 L 5 5 L 7 5 L 11 5 L 11 4 L 7 4 L 5 4 z M 10 7 L 10 10 L 7 10 L 7 11 L 10 11 L 10 14 L 11 14 L 11 11 L 14 11 L 14 10 L 11 10 L 11 7 L 10 7 z M 3 8 A 1 1 0 0 0 2 9 A 1 1 0 0 0 3 10 A 1 1 0 0 0 4 9 A 1 1 0 0 0 3 8 z "
+     class="ColorScheme-Text"
+     />
+</svg>
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-normal-dark.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-normal-dark.svg
new file mode 100644
index 0000000..aadbd5d
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-normal-dark.svg
@@ -0,0 +1,14 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 22 22">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#dedede;
+      }
+      </style>
+  </defs>
+ <path 
+    style="fill:currentColor;fill-opacity:1;stroke:none" 
+    d="M 16 5 L 16 7 L 3 7 L 3 8 L 16 8 L 16 10 L 19 7.5 L 16 5 z M 16 12 L 16 14 L 3 14 L 3 15 L 16 15 L 16 17 L 19 14.5 L 16 12 z "
+    class="ColorScheme-Text"
+    />  
+</svg>
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-normal.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-normal.svg
new file mode 100644
index 0000000..0cbf623
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-normal.svg
@@ -0,0 +1,14 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 22 22">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#363636;
+      }
+      </style>
+  </defs>
+ <path 
+    style="fill:currentColor;fill-opacity:1;stroke:none" 
+    d="M 16 5 L 16 7 L 3 7 L 3 8 L 16 8 L 16 10 L 19 7.5 L 16 5 z M 16 12 L 16 14 L 3 14 L 3 15 L 16 15 L 16 17 L 19 14.5 L 16 12 z "
+    class="ColorScheme-Text"
+    />  
+</svg>
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-play-dark.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-play-dark.svg
new file mode 100644
index 0000000..04fc475
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-play-dark.svg
@@ -0,0 +1,14 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 22 22">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#dedede;
+      }
+      </style>
+  </defs>
+ <path 
+    style="fill:currentColor;fill-opacity:1;stroke:none" 
+    d="M 11 3 C 6.568002 3 3 6.568002 3 11 C 3 15.431998 6.568002 19 11 19 C 11.692084 19 12.360349 18.903948 13 18.740234 L 13 17.707031 C 12.366247 17.894565 11.696167 18 11 18 C 7.122001 18 4 14.877999 4 11 C 4 7.122001 7.122001 4 11 4 C 14.877999 4 18 7.122001 18 11 C 18 11.696167 17.894565 12.366247 17.707031 13 L 18.740234 13 C 18.903948 12.360349 19 11.692084 19 11 C 19 6.568002 15.431998 3 11 3 z M 10 5 L 10 12 L 11 12 L 16 12 L 16 11 L 11 11 L 11 5 L 10 5 z M 14 13 L 14 19 L 20 16 L 14 13 z "
+    class="ColorScheme-Text"
+    />  
+</svg>
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-play.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-play.svg
new file mode 100644
index 0000000..07db50a
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-play.svg
@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#363636;
+      }
+      </style>
+  </defs>
+ <path style="fill:currentColor;fill-opacity:1;stroke:none" 
+     d="M 8 2 C 4.6862915 2 2 4.6862915 2 8 C 2 11.313708 4.6862915 14 8 14 L 8 13 C 5.2385763 13 3 10.761424 3 8 C 3 5.2385763 5.2385763 3 8 3 C 10.419003 3 12.43717 4.7176961 12.900391 7 L 13.910156 7 C 13.433066 4.1634955 10.972138 2 8 2 z M 7 4 L 7 8 L 7 9 L 8 9 L 9 9 L 9 8 L 8 8 L 8 7 L 8 4 L 7 4 z M 10 8 L 10 14 L 15 11 L 10 8 z "
+     class="ColorScheme-Text"
+     />
+</svg>
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-repeat-dark.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-repeat-dark.svg
new file mode 100644
index 0000000..ec8fe6e
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-repeat-dark.svg
@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#dedede;
+      }
+      </style>
+  </defs>
+ <path style="fill:currentColor;fill-opacity:1;stroke:none" 
+     d="M 11 3.5 L 11 5 L 5 5 C 3.338 5 2 6.338 2 8 L 3 8 C 3 6.892 3.892 6 5 6 L 11 6 L 11 7.5 L 14 5.5 L 11 3.5 z M 13 8 C 13 9.108 12.108 10 11 10 L 5 10 L 5 8.5 L 2 10.5 L 5 12.5 L 5 11 L 11 11 C 12.662 11 14 9.662 14 8 L 13 8 z "
+     class="ColorScheme-Text"
+     />
+</svg>
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-repeat-one-dark.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-repeat-one-dark.svg
new file mode 100644
index 0000000..bdd668a
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-repeat-one-dark.svg
@@ -0,0 +1,7 @@
+<svg width="16" height="16" version="1.1" xmlns="http://www.w3.org/2000/svg">
+ <g fill="#dedede">
+  <path d="m3.994 2c-1.258 0.015-2.179-0.03-2.931 0.385a1.88 1.88 0 0 0-0.838 0.998c-0.165 0.437-0.225 0.96-0.225 1.617v6c0 0.658 0.06 1.179 0.225 1.617 0.164 0.439 0.461 0.79 0.838 0.998 0.752 0.416 1.673 0.37 2.931 0.385h8.012c1.258-0.015 2.179 0.03 2.932-0.385a1.88 1.88 0 0 0 0.838-0.998c0.164-0.438 0.224-0.96 0.224-1.617v-6c0-0.658-0.06-1.179-0.225-1.617a1.88 1.88 0 0 0-0.838-0.998c-0.752-0.416-1.673-0.37-2.931-0.385h-1.006v1h1c1.259 0.015 2.087 0.06 2.453 0.262 0.184 0.1 0.29 0.212 0.387 0.472s0.16 0.674 0.16 1.266v6c0 0.592-0.063 1.006-0.16 1.266-0.098 0.26-0.203 0.371-0.387 0.472-0.366 0.202-1.194 0.247-2.453 0.262h-8c-1.259-0.015-2.09-0.06-2.455-0.262-0.183-0.1-0.287-0.212-0.385-0.472-0.097-0.26-0.16-0.674-0.16-1.266v-6c0-0.592 0.063-1.006 0.16-1.266 0.098-0.26 0.202-0.371 0.385-0.472 0.365-0.202 1.195-0.247 2.455-0.262h2.5v-1h-2.502z" color="#000000" font-family="sans-serif" font-weight="400" overflow="visible" style="font-feature-settings:normal;font-variant-alternates:normal;font-variant-caps:normal;font-variant-ligatures:normal;font-variant-numeric:normal;font-variant-position:normal;isolation:auto;mix-blend-mode:normal;shape-padding:0;text-decoration-color:#000000;text-decoration-line:none;text-decoration-style:solid;text-indent:0;text-orientation:mixed;text-transform:none"/>
+  <path d="m5 0 1e-3 5c0.76-0.348 1.535-0.737 2.323-1.166a44.09 44.09 0 0 0 2.259-1.334 51.555 51.555 0 0 0-2.26-1.32 43.088 43.088 0 0 0-2.323-1.18z" color="#000000" overflow="visible"/>
+  <path d="m6.117 6.247c0.167-0.07 0.34-0.147 0.52-0.234 0.184-0.092 0.363-0.19 0.536-0.294a8.2 8.2 0 0 0 0.494-0.338c0.161-0.121 0.306-0.248 0.433-0.381h0.9v6h-1v-4.652c-0.448 0.347-1.012 0.566-1.494 0.762z" font-family="Ubuntu" font-weight="700" letter-spacing="0" text-anchor="middle" word-spacing="0"/>
+ </g>
+</svg>
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-repeat-one.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-repeat-one.svg
new file mode 100644
index 0000000..6139e63
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-repeat-one.svg
@@ -0,0 +1,7 @@
+<svg width="16" height="16" version="1.1" xmlns="http://www.w3.org/2000/svg">
+ <g fill="#363636">
+  <path d="m3.994 2c-1.258 0.015-2.179-0.03-2.931 0.385a1.88 1.88 0 0 0-0.838 0.998c-0.165 0.437-0.225 0.96-0.225 1.617v6c0 0.658 0.06 1.179 0.225 1.617 0.164 0.439 0.461 0.79 0.838 0.998 0.752 0.416 1.673 0.37 2.931 0.385h8.012c1.258-0.015 2.179 0.03 2.932-0.385a1.88 1.88 0 0 0 0.838-0.998c0.164-0.438 0.224-0.96 0.224-1.617v-6c0-0.658-0.06-1.179-0.225-1.617a1.88 1.88 0 0 0-0.838-0.998c-0.752-0.416-1.673-0.37-2.931-0.385h-1.006v1h1c1.259 0.015 2.087 0.06 2.453 0.262 0.184 0.1 0.29 0.212 0.387 0.472s0.16 0.674 0.16 1.266v6c0 0.592-0.063 1.006-0.16 1.266-0.098 0.26-0.203 0.371-0.387 0.472-0.366 0.202-1.194 0.247-2.453 0.262h-8c-1.259-0.015-2.09-0.06-2.455-0.262-0.183-0.1-0.287-0.212-0.385-0.472-0.097-0.26-0.16-0.674-0.16-1.266v-6c0-0.592 0.063-1.006 0.16-1.266 0.098-0.26 0.202-0.371 0.385-0.472 0.365-0.202 1.195-0.247 2.455-0.262h2.5v-1h-2.502z" color="#000000" font-family="sans-serif" font-weight="400" overflow="visible" style="font-feature-settings:normal;font-variant-alternates:normal;font-variant-caps:normal;font-variant-ligatures:normal;font-variant-numeric:normal;font-variant-position:normal;isolation:auto;mix-blend-mode:normal;shape-padding:0;text-decoration-color:#000000;text-decoration-line:none;text-decoration-style:solid;text-indent:0;text-orientation:mixed;text-transform:none"/>
+  <path d="m5 0 1e-3 5c0.76-0.348 1.535-0.737 2.323-1.166a44.09 44.09 0 0 0 2.259-1.334 51.555 51.555 0 0 0-2.26-1.32 43.088 43.088 0 0 0-2.323-1.18z" color="#000000" overflow="visible"/>
+  <path d="m6.117 6.247c0.167-0.07 0.34-0.147 0.52-0.234 0.184-0.092 0.363-0.19 0.536-0.294a8.2 8.2 0 0 0 0.494-0.338c0.161-0.121 0.306-0.248 0.433-0.381h0.9v6h-1v-4.652c-0.448 0.347-1.012 0.566-1.494 0.762z" font-family="Ubuntu" font-weight="700" letter-spacing="0" text-anchor="middle" word-spacing="0"/>
+ </g>
+</svg>
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-repeat.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-repeat.svg
new file mode 100644
index 0000000..d0562ee
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-repeat.svg
@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#363636;
+      }
+      </style>
+  </defs>
+ <path style="fill:currentColor;fill-opacity:1;stroke:none" 
+     d="M 11 3.5 L 11 5 L 5 5 C 3.338 5 2 6.338 2 8 L 3 8 C 3 6.892 3.892 6 5 6 L 11 6 L 11 7.5 L 14 5.5 L 11 3.5 z M 13 8 C 13 9.108 12.108 10 11 10 L 5 10 L 5 8.5 L 2 10.5 L 5 12.5 L 5 11 L 11 11 C 12.662 11 14 9.662 14 8 L 13 8 z "
+     class="ColorScheme-Text"
+     />
+</svg>
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-shuffle-dark.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-shuffle-dark.svg
new file mode 100644
index 0000000..3d7cfec
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-shuffle-dark.svg
@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#dedede;
+      }
+      </style>
+  </defs>
+ <path style="fill:currentColor;fill-opacity:1;stroke:none" 
+     d="m11 3.5v1.5h-2c-1.662 0-3 1.338-3 3 0 1.108-.892 2-2 2h-2v1h2c1.662 0 3-1.338 3-3 0-1.108.892-2 2-2h2v1.5l3-2zm-9 1.5v1h2c.401 0 .772.119 1.084.32.077-.333.21-.642.387-.922-.436-.246-.933-.398-1.471-.398zm9 3.5v1.5h-2c-.401 0-.772-.119-1.084-.32-.077.333-.21.642-.387.922.436.246.933.398 1.471.398h2v1.5l3-2z"
+     class="ColorScheme-Text"
+     />
+</svg>
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-shuffle.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-shuffle.svg
new file mode 100644
index 0000000..294d81a
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-playlist-shuffle.svg
@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#363636;
+      }
+      </style>
+  </defs>
+ <path style="fill:currentColor;fill-opacity:1;stroke:none" 
+     d="m11 3.5v1.5h-2c-1.662 0-3 1.338-3 3 0 1.108-.892 2-2 2h-2v1h2c1.662 0 3-1.338 3-3 0-1.108.892-2 2-2h2v1.5l3-2zm-9 1.5v1h2c.401 0 .772.119 1.084.32.077-.333.21-.642.387-.922-.436-.246-.933-.398-1.471-.398zm9 3.5v1.5h-2c-.401 0-.772-.119-1.084-.32-.077.333-.21.642-.387.922.436.246.933.398 1.471.398h2v1.5l3-2z"
+     class="ColorScheme-Text"
+     />
+</svg>
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-seek-backward-dark.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-seek-backward-dark.svg
new file mode 100644
index 0000000..82624ac
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-seek-backward-dark.svg
@@ -0,0 +1,14 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 22 22">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#dedede;
+      }
+      </style>
+  </defs>
+ <path
+    style="fill:currentColor;fill-opacity:1;stroke:none"
+    d="M 11 4 4 11 11 18 11,11 Z M 11 11 l 7 7 0 -14 z"
+    class="ColorScheme-Text"
+    />
+</svg>
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-seek-backward.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-seek-backward.svg
new file mode 100644
index 0000000..f5e24f4
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-seek-backward.svg
@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#363636;
+      }
+      </style>
+  </defs>
+ <path style="fill:currentColor;fill-opacity:1;stroke:none"
+       d="M 8 3 3 8 8 13 8 8 Z M 8 8 l 5 5 0 -10 z"
+     class="ColorScheme-Text"
+     />
+</svg>
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-seek-forward-dark.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-seek-forward-dark.svg
new file mode 100644
index 0000000..984cae5
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-seek-forward-dark.svg
@@ -0,0 +1,14 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 22 22">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#dedede;
+      }
+      </style>
+  </defs>
+ <path
+    style="fill:currentColor;fill-opacity:1;stroke:none"
+    d="m 4 4 0 14 L 11 11 Z M 11 11 11 18 18 11 11 4 Z"
+    class="ColorScheme-Text"
+    />
+</svg>
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-seek-forward.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-seek-forward.svg
new file mode 100644
index 0000000..4dc81fd
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-seek-forward.svg
@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#363636;
+      }
+      </style>
+  </defs>
+ <path style="fill:currentColor;fill-opacity:1;stroke:none"
+       d="m 3 3 0 10 L 8 8 Z M 8 8 l 0 5 L 13 8 8 3 Z"
+     class="ColorScheme-Text"
+     />
+</svg>
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-skip-backward-dark.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-skip-backward-dark.svg
new file mode 100644
index 0000000..683171c
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-skip-backward-dark.svg
@@ -0,0 +1,14 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 22 22">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#dedede;
+      }
+      </style>
+  </defs>
+ <path
+    style="fill:currentColor;fill-opacity:1;stroke:none"
+    d="m 4 4 0 14 5 0 0 -7 0 -7 z M 9 11 l 9 7 0 -14 z"
+    class="ColorScheme-Text"
+    />
+</svg>
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-skip-backward.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-skip-backward.svg
new file mode 100644
index 0000000..3f97270
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-skip-backward.svg
@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#363636;
+      }
+      </style>
+  </defs>
+ <path style="fill:currentColor;fill-opacity:1;stroke:none"
+       d="m 3 3 0 10 3 0 0 -5 0 -5 z M 6 8 l 7 5 0 -10 z"
+     class="ColorScheme-Text"
+     />
+</svg>
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-skip-forward-dark.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-skip-forward-dark.svg
new file mode 100644
index 0000000..bc05c67
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-skip-forward-dark.svg
@@ -0,0 +1,14 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 22 22">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#dedede;
+      }
+      </style>
+  </defs>
+ <path
+    style="fill:currentColor;fill-opacity:1;stroke:none"
+    d="m 4 4 0 14 L 13 11 Z M 13 11 l 0 7 5 0 0 -14 -5 0 z"
+    class="ColorScheme-Text"
+    />
+</svg>
diff --git a/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-skip-forward.svg b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-skip-forward.svg
new file mode 100644
index 0000000..a905ae1
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/res/icons/scalable/status/media-skip-forward.svg
@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#363636;
+      }
+      </style>
+  </defs>
+ <path style="fill:currentColor;fill-opacity:1;stroke:none"
+       d="m 3 3 0 10 L 10 8 Z M 10 8 l 0 5 3 0 0 -10 -3 0 z"
+     class="ColorScheme-Text"
+     />
+</svg>
diff --git a/Gtk4/gtk155_applaunch/src/AppView.cpp b/Gtk4/gtk155_applaunch/src/AppView.cpp
new file mode 100644
index 0000000..1a0d4e3
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/src/AppView.cpp
@@ -0,0 +1,126 @@
+#include "AppView.h"
+
+// Create a model for application
+static GListModel *create_app_model()
+{
+    GListStore *store;
+    GList *apps, *temp;
+
+    // Create a list contains the application info
+    store = g_list_store_new(G_TYPE_APP_INFO);
+
+    // Get Appication list
+    apps = g_app_info_get_all();
+
+    // Append apps item to the list
+    for (temp = apps; temp; temp = temp->next)
+    {
+        g_list_store_append(store, temp->data);
+    }
+
+    g_list_free_full(apps, g_object_unref);
+
+    return G_LIST_MODEL(store);
+}
+
+static void app_view_setup(GtkListItemFactory *factory, GtkListItem *item)
+{
+    GtkWidget *app_box, *image, *label;
+
+    // Create widgets
+    app_box = gtk_box_new(GTK_ORIENTATION_VERTICAL, 5);
+    image = gtk_image_new();
+    label = gtk_label_new("             ");
+    gtk_image_set_pixel_size(GTK_IMAGE(image), 48);
+    gtk_label_set_max_width_chars(GTK_LABEL(label), 5);
+    gtk_widget_set_size_request(image, 48, 48);
+
+    // Append widgets to the box
+    gtk_box_append(GTK_BOX(app_box), image);
+    gtk_box_append(GTK_BOX(app_box), label);
+
+    gtk_list_item_set_child(item, app_box);
+}
+
+static void app_view_bind(GtkListItemFactory *factory, GtkListItem *item)
+{
+    GtkWidget *image;
+    GtkWidget *label;
+    GAppInfo *app_info;
+
+    // Get Widgets
+    image = gtk_widget_get_first_child(gtk_list_item_get_child(item));
+    label = gtk_widget_get_next_sibling(image);
+    app_info = G_APP_INFO(gtk_list_item_get_item(item));
+
+    // Initalize widgets
+    gtk_image_set_from_gicon(GTK_IMAGE(image), g_app_info_get_icon(app_info));
+    gtk_label_set_label(GTK_LABEL(label), g_app_info_get_display_name(app_info));
+    gtk_label_set_max_width_chars(GTK_LABEL(label), 15);
+    gtk_label_set_ellipsize(GTK_LABEL(label), PANGO_ELLIPSIZE_END);
+}
+
+static void app_view_activate(GtkGridView *list, guint position, gpointer data)
+{
+    GAppInfo *app_info;
+    GdkAppLaunchContext *context;
+    GError *error = NULL;
+
+    app_info = G_APP_INFO(g_list_model_get_item(G_LIST_MODEL(gtk_grid_view_get_model(list)),
+                                                position));
+
+    /* Prepare the context for launching the application and launch it. This
+     * code is explained in detail in the documentation for GdkAppLaunchContext
+     * and GAppInfo.
+     */
+    context = gdk_display_get_app_launch_context(gtk_widget_get_display(GTK_WIDGET(list)));
+    if (!g_app_info_launch(app_info,
+                           NULL,
+                           G_APP_LAUNCH_CONTEXT(context),
+                           &error))
+    {
+        // GtkAlertDialog *dialog;
+
+        // /* And because error handling is important, even a simple demo has it:
+        //  * We display an error dialog that something went wrong.
+        //  */
+        // dialog = gtk_alert_dialog_new("Could not launch %s", g_app_info_get_display_name(app_info));
+        // gtk_alert_dialog_set_detail(dialog, error->message);
+        // gtk_alert_dialog_show(dialog, GTK_WINDOW(gtk_widget_get_root(GTK_WIDGET(list))));
+        // g_object_unref(dialog);
+        // g_clear_error(&error);
+    }
+
+    g_object_unref(context);
+    g_object_unref(app_info);
+}
+
+GtkWidget *app_view_new()
+{
+    GtkWidget *list, *sw;
+    GListModel *model;
+    GtkListItemFactory *factory;
+
+    // Create widgets
+    sw = gtk_scrolled_window_new();
+    gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(sw),
+                                   GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
+
+    // Create list item factory
+    factory = gtk_signal_list_item_factory_new();
+    g_signal_connect(factory, "setup", G_CALLBACK(app_view_setup), NULL);
+    g_signal_connect(factory, "bind", G_CALLBACK(app_view_bind), NULL);
+
+    // Create model and view
+    model = create_app_model();
+    list = gtk_grid_view_new(GTK_SELECTION_MODEL(
+                             gtk_single_selection_new(model)),
+                             factory);
+    g_signal_connect(list, "activate", G_CALLBACK(app_view_activate), NULL);
+    gtk_grid_view_set_min_columns(GTK_GRID_VIEW(list), 8);
+
+    // Add Child
+    gtk_scrolled_window_set_child(GTK_SCROLLED_WINDOW(sw), list);
+
+    return sw;
+}
diff --git a/Gtk4/gtk155_applaunch/src/AppView.h b/Gtk4/gtk155_applaunch/src/AppView.h
new file mode 100644
index 0000000..ca6fc99
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/src/AppView.h
@@ -0,0 +1,5 @@
+#pragma once
+
+#include <gtk/gtk.h>
+
+GtkWidget *app_view_new();
diff --git a/Gtk4/gtk155_applaunch/src/Applauncher.cpp b/Gtk4/gtk155_applaunch/src/Applauncher.cpp
new file mode 100644
index 0000000..c95f215
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/src/Applauncher.cpp
@@ -0,0 +1,26 @@
+#include "Applauncher.h"
+#include "AppView.h"
+
+struct _AppLauncher{
+    GtkApplicationWindow parent_instance;
+};
+
+G_DEFINE_TYPE(AppLauncher, app_launcher, GTK_TYPE_APPLICATION_WINDOW)
+
+static void app_launcher_init(AppLauncher *self)
+{
+    GtkWidget *scrolled_window = app_view_new();
+    gtk_window_set_default_size(GTK_WINDOW(self), 624, 400);
+
+    // Add list to the window
+    gtk_window_set_child(GTK_WINDOW(self), scrolled_window);
+}
+
+static void app_launcher_class_init(AppLauncherClass *klass)
+{
+}
+
+AppLauncher *app_launcher_new(GtkApplication *app){
+    return APP_LAUNCHER(g_object_new(app_launcher_get_type(), 
+        "application", app, NULL));
+}
\ No newline at end of file
diff --git a/Gtk4/gtk155_applaunch/src/Applauncher.h b/Gtk4/gtk155_applaunch/src/Applauncher.h
new file mode 100644
index 0000000..83d91c5
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/src/Applauncher.h
@@ -0,0 +1,7 @@
+#pragma once
+
+#include <gtk/gtk.h>
+
+G_DECLARE_FINAL_TYPE(AppLauncher, app_launcher, APP, LAUNCHER, GtkApplicationWindow)
+
+AppLauncher *app_launcher_new(GtkApplication *app);
diff --git a/Gtk4/gtk155_applaunch/src/main.cpp b/Gtk4/gtk155_applaunch/src/main.cpp
new file mode 100644
index 0000000..e9f9056
--- /dev/null
+++ b/Gtk4/gtk155_applaunch/src/main.cpp
@@ -0,0 +1,14 @@
+#include "Applauncher.h"
+
+static void gtkmain(GtkApplication *app, gpointer user_data)
+{
+    AppLauncher *launcher = app_launcher_new(app);
+    gtk_window_present(GTK_WINDOW(launcher));
+}
+
+int main(int argc, char **argv)
+{
+    GtkApplication *app = gtk_application_new("org.gtk.daleclack", G_APPLICATION_NON_UNIQUE);
+    g_signal_connect(app, "activate", G_CALLBACK(gtkmain), NULL);
+    return g_application_run(G_APPLICATION(app), argc, argv);
+}