Hi, i am trying to write a small programm that changes the mouse cursor under X11 using the XCursor lib. My purpose it to use colour cursors (ideally read from an image file). I am playing with XCursor lib but i have no good results. I wrote the following piece of code and it does not change anything: #include <X11/Xlib.h> #include <X11/Xcursor/Xcursor.h> #include <cstdlib> int main() { Display *d = XOpenDisplay (NULL); if(d == NULL) printf("display is null\n"), exit(1); if(XcursorSupportsARGB(d)==true) printf("true\n"); else printf("false\n"); printf("%d\n", XcursorSetTheme(d, "whiteglass")); printf("%s\n",XcursorGetTheme(d)); return 0; } Thoughts ? Thanks.