[.net] get HDC from usercontrol object?
Author
I need to get the HDC of a System::Windows::Forms::UserControl object.
All I've found so far is a Handle that's a IntPtr and won't work for the dll function I need to call.
How about something like this:
If it's in an OnPaint method, you don't need to do CreateGraphics(); you can just use the Graphics property of the PaintEventArgs object.
using(Graphics g = this.CreateGraphics()){ IntPtr hdc = g.GetHdc(); // use it here...}If it's in an OnPaint method, you don't need to do CreateGraphics(); you can just use the Graphics property of the PaintEventArgs object.
Author
Actually what I need is a HDC. I need to pass the value to a function in a dll. It won't let me typecast the IntPtr to a HDC value.
Author
Ok, this is how I got it working.
Maybe someday I'll get the hang of this .NET stuff...
HWND hWnd = (HWND)this->Handle.ToInt32();hDC = GetDC(hWnd);Maybe someday I'll get the hang of this .NET stuff...
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