[PATCH] DesktopWorkArea does not support multiple monitors

Although there is a way to apply the DesktopWorkArea setting to a monitor that 
is not the primary one by adding the according offsets you get from calling 
(for example) GetMonitorInfo, the approach is neither intuitive nor does it 
allow to be applied to multiple monitors.

Therefore, I propose a simple patch that adds support for multiple 
DesktopWorkAreas by introducing the new configuration option DesktopWorkAreaX 
where X is the logical screen number. The setting expects the rectangle like 
the original DesktopWorkArea though it will automatically calculate the right 
offset for each monitor.

For the sake of backward compatibility, the DesktopWorkArea setting (which is 
now equivalent to DesktopWorkArea0) still works and will set the area for the 
first display just as before (given that the rectangle is within the bounds of 
the first screen).

Usage example that reserves the left 200 pixel of monitor 0 and the right 200 
pixels of monitor 1 where both screens are 1280x1024 with a 40 pixel high 
taskbar on monitor 0:
[Rainmeter]
DesktopWorkArea0=200,0,1280,984
DesktopWorkArea1=0,0,1080,1024

On a technical note (maybe for another Issue): The m_OldDesktopWorkAreas 
storage might be redundant as the CSystem::GetMultiMonitorInfo().monitors 
already hold this particular information. I am not quite sure if/when the 
GetMultiMonitorInfo() actually respects the changed DesktopWorkArea. But in the 
end it does not harm I suppose.
There might also be (already) some nasty side effects, when the resolution is 
changed before RainMeter is quit. 
However, my proposed patch should not have any negative (nor positive) effect 
on this existing behavior.

Original issue reported on code.google.com by hurrelmann on 29 Jun 2010 at 8:44

Attachments:

MultiMonitorDesktopArea.patch

Kobikan / rainmeter

[PATCH] DesktopWorkArea does not support multiple monitors #161