drawing graphics on top of the control

[Anonymous]

Hello,

I have a need to draw some graphics such as lines or circles on the top of the view control client area.

I can't seem to get the order right so the control always has the last word in the painting order. Does anyone know who to do this? I have tried several approaches such as overlaying transparent windows or deriving my own viewcontrol class but I can't draw on top of the control.

I would appreciate any suggestions.

Many thanks,

Ken 

[adam.nagy · Accepted solution]

Hi Ken,

Placing a transparent window in front of the control and drawing into that should work fine - it works for me. 

See attached project.

Cheers,

Adam Nagy

Autodesk Developer Network

[Anonymous]

Thank you Adam,

I see what you are doing with the transparency key. This is very useful and I can use it for some things I want to do. Infortunately the mouse events only come through where graphics are drawn in anything other that the key colour. This is fine for some situations but I am still looking for a way to get the events when the mouse is over the control.

.

The only thing I have tried that will get the events while the mouse is over the control is to use the WndProc method or use a message filter class. I find using these methods to be rather messy and don't really want to use them, do you have any suggestions for getting the mouse events?

Many thanks,

Ken