diff --git a/Gtkmm3/gtk117_colorpicker/src/MyWin.cc b/Gtkmm3/gtk117_colorpicker/src/MyWin.cc
index b94d8bd..35e3718 100644
--- a/Gtkmm3/gtk117_colorpicker/src/MyWin.cc
+++ b/Gtkmm3/gtk117_colorpicker/src/MyWin.cc
@@ -127,7 +127,7 @@ void MyWin::get_pixel_color(int x,int y){
     if(sized->get_has_alpha()){
         color_str = Glib::ustring(g_strdup_printf("#%02X%02X%02X%02X",red,blue,green,alpha));
     }else{
-        color_str = Glib::ustring(g_strdup_printf("#%02X%02X%02X",red,blue,green));
+        color_str = Glib::ustring(g_strdup_printf("#%02X%02X%02X",red,green,blue));
     }
     label_color_str.set_label(color_str);
 }
diff --git a/README.md b/README.md
index 1ef3e9f..8f0fb38 100644
--- a/README.md
+++ b/README.md
@@ -1,28 +1,35 @@
 # testing-repository
 
-A testing repository
+## A testing repository
 
-[Experimental]: After gtk112 and gtk113, the submodule GCR_CMake is imported
+[Experimental]: The rust programming language is imported for some codes
+
+[News]: After gtk112 and gtk113, the submodule GCR_CMake is imported
 
 Thanks for the project author https://github.com/Makman2/GCR_CMake
 
 (Actually, I forked the project for convenience)
 
+### These contents are outdated:
+
 Note: To minimize the repeated files,I put the same files as public resource
 
-The file name is above: public\_res\<filename\>\_\<file extension\> or public\_res\<filename\>\_\<file extension\>
+The file name is above:
+
+public\_res\<filename\>\_\<file extension\> or public\_res\<filename\>\_\<file extension\>
+
+~~Please compile with g++ or gcc (Clang is also supported)
 
-Please compile with g++ or gcc (Clang is also supported)
 (Visual Studio may have issues)
 
 Ege dircitory need ege 19.01 and above to complie
 
 C/C++ code using gtk2 needs gtk 2.24.10
 
-Gtk3 codes:
+#### For Gtk3 codes:
 
 before gtk17 supports Gtk3.6.4
 
 gtk17 and above removed support for gtk3.18 and below
 
-Win32 exe supports WinXP and above 
+Win32 exe supports WinXP and above
diff --git a/gtk-rs/gtk-rs-dialogs/.gitignore b/gtk4-rs/gtk-rs-dialogs/.gitignore
similarity index 100%
rename from gtk-rs/gtk-rs-dialogs/.gitignore
rename to gtk4-rs/gtk-rs-dialogs/.gitignore
diff --git a/gtk-rs/gtk-rs-dialogs/.vscode/launch.json b/gtk4-rs/gtk-rs-dialogs/.vscode/launch.json
similarity index 100%
rename from gtk-rs/gtk-rs-dialogs/.vscode/launch.json
rename to gtk4-rs/gtk-rs-dialogs/.vscode/launch.json
diff --git a/gtk-rs/gtk-rs-dialogs/Cargo.lock b/gtk4-rs/gtk-rs-dialogs/Cargo.lock
similarity index 100%
rename from gtk-rs/gtk-rs-dialogs/Cargo.lock
rename to gtk4-rs/gtk-rs-dialogs/Cargo.lock
diff --git a/gtk-rs/gtk-rs-dialogs/Cargo.toml b/gtk4-rs/gtk-rs-dialogs/Cargo.toml
similarity index 100%
rename from gtk-rs/gtk-rs-dialogs/Cargo.toml
rename to gtk4-rs/gtk-rs-dialogs/Cargo.toml
diff --git a/gtk-rs/gtk-rs-dialogs/src/main.rs b/gtk4-rs/gtk-rs-dialogs/src/main.rs
similarity index 100%
rename from gtk-rs/gtk-rs-dialogs/src/main.rs
rename to gtk4-rs/gtk-rs-dialogs/src/main.rs
diff --git a/gtk-rs/gtk-rs-media/.vscode/launch.json b/gtk4-rs/gtk-rs-media/.vscode/launch.json
similarity index 100%
rename from gtk-rs/gtk-rs-media/.vscode/launch.json
rename to gtk4-rs/gtk-rs-media/.vscode/launch.json
diff --git a/gtk-rs/gtk-rs-media/Cargo.lock b/gtk4-rs/gtk-rs-media/Cargo.lock
similarity index 100%
rename from gtk-rs/gtk-rs-media/Cargo.lock
rename to gtk4-rs/gtk-rs-media/Cargo.lock
diff --git a/gtk-rs/gtk-rs-media/Cargo.toml b/gtk4-rs/gtk-rs-media/Cargo.toml
similarity index 100%
rename from gtk-rs/gtk-rs-media/Cargo.toml
rename to gtk4-rs/gtk-rs-media/Cargo.toml
diff --git a/gtk4-rs/gtk-rs-media/gtk-rs-media.code-workspace b/gtk4-rs/gtk-rs-media/gtk-rs-media.code-workspace
new file mode 100644
index 0000000..517e0b2
--- /dev/null
+++ b/gtk4-rs/gtk-rs-media/gtk-rs-media.code-workspace
@@ -0,0 +1,8 @@
+{
+	"folders": [
+		{
+			"path": "."
+		}
+    ],
+    "settings": {}
+}
\ No newline at end of file
diff --git a/gtk-rs/gtk-rs-media/src/main.rs b/gtk4-rs/gtk-rs-media/src/main.rs
similarity index 100%
rename from gtk-rs/gtk-rs-media/src/main.rs
rename to gtk4-rs/gtk-rs-media/src/main.rs