Any way to detect key press on mouse click?

[d.]

Hi experts,

Graph zoom uses mouse click left and right with <Ctrl> held down.  This happens without a callback on the graph.

I'd like to use mouse click left and right without <Ctrl> to do some custom things by having a callback on the graph.

But using the zoom feature with <Ctrl> not only zooms but does the callback.

Is there a way for me to detect the <Ctrl> key held down when I get my mouse click in the callback so my custom features don't conflict with zoom?

The only reference to looking at keys I can find in the documentation is EVENT_KEYPRESS, and you don't get that for <Ctrl> and it's not a key press anyway.

Thanks in advance.

Dave

[msaxon]

A call to GetGlobalMouseState() or GetRelativeMouseState() in your callback will tell you the state of the <Ctrl>, <Shift> and <Alt> keys. Strange but true.

[d.]

Indeed it does.  Thanks Martin.

I love using CVI, but one of the problems is it has so many features and there are not enough keywords for to get the answers you want.  I tried many different ways to find this, but I just didn't pick the right words.  And of course, the answer was in an obvious place.

Dave