I am porting a PC Allegro game to the MAC. I can't find the function that gets rid of the OS cursor. I have tried:

disable_hardware_cursor();

show_mouse(NULL);

BITMAP * hidden = create_bitmap(1,1);
set_mouse_sprite(hidden);

select_mouse_cursor(MOUSE_CURSOR_NONE);

Is there any other way to hide the mac OS X mouse? FYI I am using OS X 10.2.8 on a G4 but would like it to be compatible with the later OS X's

That thread let me narrow down the problem. The mouse hides perfectly in windowed mode it also hides when in regular full screen mode. However my program is running in 32 bit color depth. When the display settings are:

set_color_depth(32);
set_gfx_mode(GFX_AUTODETECT_WINDOWED, 1024, 768,0,0);

on Mac OS X 10.2.8 the cursor can not be hiden.

I double checked this by setting the exmouse.c example file to render in 32bit full screen and it produced the same result.

As far as I can tell no allegro routines can resolve this problem. Fortunately I found a Mac OS X function that can:

http://developer.apple.com/documentation/GraphicsImaging/Reference/Quartz_Services_Ref/Reference/reference.html#//apple_ref/c/func/CGDisplayHideCursor

The exact solution in project builder is as follows:
Project->Add Frameworks...->ApplicationServices.framework
in main.cpp:
#include <ApplicationServices/ApplicationServices.h>

int main(){
...
CGDisplayHideCursor(kCDSirectMainDisplay);
...
}

I hope this helps some one else.
Credit for solution: me

Yes Peter I saw your other thread. ML referenced me to it. Unfortunately I did not find the thread on a google search for this problem. So I started my own thread.

It was helpfull in narrowing down the problem. Especially using exmouse as a test harness, instead of relying on my own somewhat faulty code.

Still I claim credit since I spent the time scouring the apple dev website