ScreenToClient function

[horst123]

Hi,

can anybody explain to me, how to use the ScreenToClient function I've done this:

IntPtr hwnd;
hwnd = panel1 -> get_Handle();
ScreenToClient(hwnd, mousePos);

where panel is a Panel and the mousePos is a Point. The Error I get is: can't convert IntPtr to HWND

thx for help

 

[horst123]

Hmm,

after lots of try I did like that:

ScreenToClient((HWND)&hwnd, (LPPOINT)&mousePos);

 

[horst123]

Okay, now there's no error, but the piece of code I wrote does nothing. The coordinates are still wrong...

Any idea?

 

[PerFnurt]

I guess you're calling a member function, not the Windows API.

This should do the trick:

::ScreenToClient(hwnd, mousePos);

/Per

_{www.perfnurt.se}

 

[horst123]

Hi,

I've done it. After your comment I got the idea:

mousePos = panel1 -> PointToClient(mousePos);

Okay, thx anyway!

 

[ArkM]

Probably get_Handle() member returns not HWND handle (1st arg of ::ScreenToClient type). As usually get_Handle() in this context returns bitmap, icon etc handles...