GTK Programming

Eines meiner ersten Beispiele.. mittlerweile würde ich eher auf Glade zurückgreifen da die Entwicklung um einiges schneller vorangeht..

#include <gtk/gtk.h> static void hello( GtkWidget *widget, gpointer data) { g_print("Hello World\n"); } static gboolean delete_event (GtkWidget *widget, GdkEvent *event, gpointer data) { g_print("delete event occured\n"); return TRUE; } static void destroy (GtkWidget *widget, gpointer data) { gtk_main_quit(); } int main(int argc, char *argv[]){ GtkWidget *window; GtkWidget *button; gtk_init(&argc, &argv); window = gtk_window_new(GTK_WINDOW_TOPLEVEL); g_signal_connect(G_OBJECT(window),"delete_event", G_CALLBACK(delete_event), NULL); g_signal_connect(G_OBJECT(window),"destroy", G_CALLBACK(destroy), NULL); gtk_container_set_border_width(GTK_CONTAINER(window), 10); button = gtk_button_new_with_label("Hello World"); g_signal_connect(G_OBJECT(button),"clicked", G_CALLBACK(hello), NULL); g_signal_connect_swapped(G_OBJECT(button),"clicked", G_CALLBACK(gtk_widget_destroy), G_OBJECT(window)); gtk_container_add (GTK_CONTAINER(window),button); gtk_widget_show(button); gtk_widget_show(window); gtk_main(); return 0; }

compilen mit:

gcc `gtk-config --cflags` -lgtk file.c (gegen gtk 1.2 linken) oder gcc `pkg-config --cflags --libs gtk+-2.0` (gegen gtk 2.0 linken) oder gcc `gtk-config --cflags --libs gtk+` (gegen gtk 1.2 linken)

Skinnable GTK1.2 Applikation

test.png ist in diesem Fall ein Transparentes PNG File erstellt mit Gimp

main.c

#include <gtk/gtk.h> #include <stdio.h> #include <gdk/gdk.h> #include <gdk_imlib.h> int main(int argc, char *argv[]){ GtkWidget *mainwindow; GdkImlibImage *im; GdkPixmap *pixmap; gint nheight,nwidth; GdkBitmap *mask; GdkWindow *win; gtk_init(&argc,&argv); gdk_imlib_init(); gtk_widget_push_visual(gdk_imlib_get_visual()); gtk_widget_push_colormap(gdk_imlib_get_colormap()); im=gdk_imlib_load_image("test.png"); if(!im){ fprintf(stderr,"Couldn't load image"); throw; } nwidth=im->rgb_width; nheight=im->rgb_height; fprintf(stderr,"width: %d height: %d\n", nwidth,nheight); gdk_imlib_render(im,nwidth,nheight); //nwidth,nheight); mask = gdk_imlib_move_mask(im); pixmap = gdk_imlib_move_image(im); mainwindow = gtk_window_new(GTK_WINDOW_TOPLEVEL); gtk_widget_set_app_paintable(mainwindow,TRUE); gtk_window_set_title(GTK_WINDOW(mainwindow),"mainwindow"); gtk_window_set_policy(GTK_WINDOW(mainwindow),FALSE,FALSE,FALSE); gtk_widget_realize(mainwindow); gdk_window_set_back_pixmap(mainwindow->window,pixmap,0); gdk_window_shape_combine_mask(mainwindow->window,mask,0,0); gdk_window_set_decorations(mainwindow->window,(GdkWMDecoration)0); gtk_widget_set_usize(mainwindow,nwidth,nheight); //500,500); gtk_widget_show(mainwindow); gtk_main(); return 0; }

Makefile

GCC=gcc LIBS=`pkg-config --cflags --libs gtk+` `pkg-config --cflags --libs imlibgdk` DEBUG=-g all: $(GCC) main.c $(LIBS) $(DEBUG) -o main clean: rm main