macOS NSScreen giving me nonsensical coordinates

controller.m said:

NSRect frameRect;

....

for(int i = 0; i < scns; i ++){

frameRect = [[[NSScreen screens] objectAtIndex:i] frame];
NSLog(@"Checking screen %i: %f %f %f %f",i,frameRect.origin.x,frameRect.origin.y,frameRect.origin.x+frameRect.size.width,frameRect.origin.y+frameRect.size.height);

...

}

Click to expand...

Console said:

Checking screen 0: 0.000000 0.000000 1600.000000 1200.000000

...

Checking screen 1: -1680.000000 150.000000 0.000000 1200.000000

Click to expand...

The coordinates assume that my screens are aligned at the bottom, which is not the case; they are aligned at the top, so screen 1 should be -1680, 0, 0, 1050.

I suppose it wouldn't be a problem, except that my program interacts with AppleScript, which actually gets the proper coordinates. I can't just put a 150 pixel vertical offset (which is, of course, the difference in heights of the monitors), because I want to ultimately produce a real program.

Am I missing something? Is there an alternative to NSScreen? I'm so close to finishing this project, but I can't make any sense out of this.

Ok, thanks guys. That also explains why I thought the visible frame assumed the menubar was at the bottom.

I'm working on a utility called Gridlock that allows you to move and resize windows based on coordinates on a hypothetical grid, and wanted to make it work on multiple screens.