How to set mouse cursor position in C on linux? - c

Question

how can I set the mouse cursor position in an X window using a C program under Linux?
thanks :)
(like setcursorpos() in WIN)
EDIT:
I've tried this code, but doesn't work:
#include <curses.h>
main(){
move(100, 100);
refresh();
}

Answer 1

12.4 - Moving the Pointer
Although movement of the pointer
normally should be left to the control
of the end user, sometimes it is
necessary to move the pointer to a new
position under program control.
To move the pointer to an arbitrary
point in a window, use XWarpPointer().
Example:
Display *dpy;
Window root_window;
dpy = XOpenDisplay(0);
root_window = XRootWindow(dpy, 0);
XSelectInput(dpy, root_window, KeyReleaseMask);
XWarpPointer(dpy, None, root_window, 0, 0, 0, 0, 100, 100);
XFlush(dpy); // Flushes the output buffer, therefore updates the cursor's position. Thanks to Achernar.

Answer 2

This is old, but in case someone else comes across this issue. The answer provided by tusbar was correct but the command XFlush(dpy) must be added at the end to update the cursor's position. The libraries needed are: X11/X.h, X11/Xlib.h, X11/Xutil.h.
int main(int argc, char *argv[]){
//Get system window
Display *dpy;
Window root_window;
dpy = XOpenDisplay(0);
root_window = XRootWindow(dpy, 0);
XSelectInput(dpy, root_window, KeyReleaseMask);
XWarpPointer(dpy, None, root_window, 0, 0, 0, 0, 100, 100);
XFlush(dpy);
return 0;}
PS: You can use this command to build the code gcc main.c -lX11

Answer 3

You want to write a X11 program that uses the call XWarpPointer function to move the point to a relative or global position. (Xlib Programming Manual, Vol 1)
In general, using Xlib for programming the X Window System, is the most basic, and quite low-level interface for graphical programming on a Unix or Linux system. Most applications developed nowadays using a higher level library such as GTK or Qt for developing their GUI applications.
Curses or NCurses (New Curses) is for programming terminal-oriented interfaces, so are not useful in this case.

Answer 4

use Jordan Sissel's excellent utility xdotool.
http://www.semicomplete.com/projects/xdotool/
it provide XWarpPointer wrapper function like xdo_mousemove(), here is some example:
Display *display = NULL;
xdo_t *xdo = NULL;
void mouse_left_down(int x, int y)
{
xdo_mousemove(xdo, x, y, 0)
xdo_mousedown(xdo, CURRENTWINDOW, Button1);
}
void mouse_left_up(int x, int y)
{
xdo_mouseup(xdo, CURRENTWINDOW, Button1, 1, 0);
}
void mouse_left_double_click(int x, int y)
{
xdo_mousemove(xdo, x, y, 0);
xdo_click_multiple(xdo, CURRENTWINDOW, Button1, 1, 0);
doubleclick = TRUE;
}
int main()
{
display = XOpenDisplay(NULL);
if(display == NULL)
{
fprintf(stderr, "can't open display!\n");
return -1;
}
xdo = xdo_new((char*) display);
//some task here
// ...
return 0;
}

Answer 5

You can use XWarpPointer to move the mouse cursor in an X window.
XWarpPointer(display, src_w, dest_w, src_x, src_y, src_width, src_height, dest_x,
dest_y)
Display *display;
Window src_w, dest_w;
int src_x, src_y;
unsigned int src_width, src_height;
int dest_x, dest_y;

Answer 6

All modern terminals should support ANSI escape sequences. For anything more complicated (and more portable), however, you should look into using a library such as ncurses.