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@jaimet
Forked from tgr/set_wm_class.c
Created January 12, 2020 21:58
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
int main(int argc, char *argv[])
{
unsigned long value;
char *terminatedAt;
XClassHint class;
Status status;
Display *display;
Window window;
if ( argc != 3 ) {
printf( "Usage: %s <window id> <window class>\n", argv[0] );
return 1;
}
window = strtoul( argv[1], &terminatedAt, 0 );
if ( *terminatedAt != '\0' ) {
printf( "Could not parse window id: %s\n", argv[1] );
return 2;
}
display = XOpenDisplay( NULL );
status = XGetClassHint( display, window, &class );
if ( !status ) return 4;
XFree( class.res_class );
class.res_class = strdup( argv[2] );
printf("Setting WM_CLASS of window %lu to \"%s\", \"%s\"\n", window, class.res_name, class.res_class );
XSetClassHint( display, window, &class );
XCloseDisplay( display );
XFree( class.res_name );
XFree( class.res_class );
return 0;
}
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