hotspot() not working

rc3 · #1 22-Oct-2009, 15:35

OK here's my second problem while working on my touch screen gui program:
I am trying to change the default mouse cursor position to [ for example (10,10) ] when the main window and here's what I have in my code

CPP / C++ / C Code:

...
    win->show(argc, argv);
    win->hotspot(10,10);
...

But it doesn't work, the initial position of the mouse cursor remains whereever it is before the main window shows. Am I using the wrong function?

fltk version: 1.1
OS: Debian etch
platform: armv4tl
fltk runs on Xorg but no windows manager is used.

rc3 · #2 27-Oct-2009, 13:34

I just realized that hotspot is for changing the position of a window instead of the mouse cursor. And I am still strugling to find out how to change the initial position of mouse cursor in a window. Help, anybody?

rc3 · #3 27-Oct-2009, 14:23

OK I just found the answer from
http://www.fltk.org/doc-1.0/osissues.html
http://www.mail-archive.com/fltk-opengl@easysw.com/msg00023.html

Solution:

CPP / C++ / C Code:

#include <FL/x.H>
extern Display *fl_display;

int jump_cursor (int new_x, int new_y)
{
      Window rootwindow = DefaultRootWindow(fl_display);
      XWarpPointer(fl_display, rootwindow, rootwindow, 0, 0, 0, 0,new_x, new_y);
      return 0; // Assume OK
}

To use the function, call jump_cursor(0,0) before calling the show() method of the main window.

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hotspot() not working

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