hi,hello:
Thanks for your helps.
now i want to do:my condition is being no mouse,the only terminal controlling tool
is the keyboard.(i am doing a STB project.). when a button get focus(with keyboard) ,
setting the button's background to be a color. then when the button lost
focus,setting the button's background to be another color.i do the following.
i rewrite the testing code,but it's still not working like i expected.
#include<gtk/gtk.h>
#include<gdk/gdkx.h>
#define WIDTH 30
#define Height 20
/* drawing a colorful rectangle on the button,the button will look like with a
colorful background*/
void DrawColorRectOnButton(GtkWidget *object,gpointer data)
{
static GdkColormap *colormap = NULL;
static GdkGC *gc = NULL;
GdkColor color;
GtkWidget *widget = GTK_WIDGET(data);
gint x = 0;
gint y=0;
gint width = 30; //the rectangle's width,height equal to the button's
width,height
gint height = 20;
if(NULL == colormap)
{
colormap = gdk_color_get_system();
gc = gdk_gc_new(widget->window);
}
color.red = 61696;
color.green = 52736;
color.blue = 45312;
gdk_color_alloc(colormap,&color);
gdk_gc_set_foreground(gc,&color);
gdk_draw_rectangle(widget->window,gc,TRUE,x,y,width,height);
}
int main(int argc,char *argv[])
{
GtkWidget *window;
GttkWidget *button1;
GtkWidget *area1;
GtkWidget *button2;
GtkWidget *area2;
GtkWidget *vbox;
gtk_init(&argc,&argv);
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_signal_connect(GTK_OBJECT(window),"destroy",GTK_SIGNAL_FUNC(gtk_exit),NULL);
vbox = gtk_vbox_new(TRUE,2);
gtk_container_add(GTK_CONTAINER(window),vbox);
button1= gtk_button_new_with_label("1");
gtk_widget_set_usize(button1,WIDTH,HEIGHT);
gtk_box_pack_start(GTK_BOX(vbox),button1,TRUE,FALSE,0);
gtk_window_set_focus(GTK_WINDOW(window),button1);
area1 = gtk_drawing_area_new();
gtk_widget_set_usize(area1,WIDTH,HEIGHT);
gtk_signal_connect(GTK_OBJECT(button1),"focus_in_event",GTK_SIGNAL_FUNC(DrawColorRectButton),area1);
button2= gtk_button_new_with_label("2");
gtk_widget_set_usize(button2,WIDTH,HEIGHT);
gtk_box_pack_start(GTK_BOX(vbox),button2,TRUE,FALSE,0);
gtk_window_set_focus(GTK_WINDOW(window),button2);
area2 = gtk_drawing_area_new();
gtk_widget_set_usize(area2,WIDTH,HEIGHT);
gtk_signal_connect(GTK_OBJECT(button2),"focus_in_event",GTK_SIGNAL_FUNC(DrawColorRectButton),area2);
gtk_widget_show(area1);
gtk_widget_show(area2);
gtk_widget_show(button1);
gtk_widget_show(button2);
gtk_widget_show(vbox);
gtk_widget_show(window);
gtk_main();
return 1;
}
PS: i don't know how to set a button's background color when the user enviorment
without mouse supporting( i know when the mouse available,using
bg[GTK_STATE_PRELIGHT]=color, the button's color will show some color after the mouse
pointer put on the button).
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