43 lines
1.6 KiB
C++
43 lines
1.6 KiB
C++
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#include<gtk/gtk.h>
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static void button_clicked(GtkWidget *widget,GtkApplication *app){
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//A text function of gtk_overlay_get_child
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GtkWindow *win=gtk_application_get_active_window(app);
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GtkWidget *overlay,*label;
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overlay=gtk_window_get_child(win);
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label=gtk_overlay_get_child(GTK_OVERLAY(overlay));
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gtk_label_set_label(GTK_LABEL(label),"Test");
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}
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static void gtkmain(GtkApplication *app,gpointer user_data){
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GtkWidget *window,*label1,*label2,*overlay,*button;
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//Main window
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window=gtk_application_window_new(app);
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gtk_window_set_default_size(GTK_WINDOW(window),400,100);
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gtk_window_set_icon_name(GTK_WINDOW(window),"gtk66");
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//Overlay widgets
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overlay=gtk_overlay_new();
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//Button
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button=gtk_button_new_with_label("Test");
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g_signal_connect(button,"clicked",G_CALLBACK(button_clicked),app);
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gtk_widget_set_halign(button,GTK_ALIGN_CENTER);
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gtk_widget_set_valign(button,GTK_ALIGN_END);
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gtk_overlay_add_overlay(GTK_OVERLAY(overlay),button);
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//Label1
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label1=gtk_label_new("label1");
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gtk_widget_set_valign(label1,GTK_ALIGN_START);
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gtk_widget_set_halign(label1,GTK_ALIGN_CENTER);
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gtk_overlay_add_overlay(GTK_OVERLAY(overlay),label1);
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//label2
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label2=gtk_label_new("label2");
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gtk_overlay_set_child(GTK_OVERLAY(overlay),label2);
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gtk_window_set_child(GTK_WINDOW(window),overlay);
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gtk_widget_show(window);
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}
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int main(int argc,char **argv){
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GtkApplication *app;
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app=gtk_application_new("org.gtk.daleclack",G_APPLICATION_NON_UNIQUE);
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g_signal_connect(app,"activate",G_CALLBACK(gtkmain),NULL);
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return g_application_run(G_APPLICATION(app),argc,argv);
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}
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