SDL gives incorrect mouse coordinates under Mac OS X

Under Mac OS 10.3 with a recent SDL, I get incorrect mouse coordinates
for button down events in a specific circumstance. If I pass another
window over the SDL window, and then draw back that window, and then
click in the middle of the SDL window, every subsequent click in the
SDL window until I move the mouse will generate a mouse button down
event with a Y coordinate of 0 regardless of where the click actually
is. This doesn’t happen under x86 Linux.

I’m including at the end of this email a tiny program that makes it
easy to reproduce and see the issue.

Mike Benfield


int main(int argc, char** argv)
SDL_SetVideoMode(400, 400, 32, 0);

SDL_Event e;
for(;:wink: {
switch(e.type) {
printf(“click x: %d, y: %d\n”, e.button.x, e.button.y);
case SDL_QUIT:
return 0;