Topic: AutoCAD window hDC

[dann.boy.001]

Hello!

Is posible to get hDC window of AutoCAD?

I want to use it to draw on autocad window with
windows api (in net system.drawing.graphics).

Maybe somebody know is posible it 

Best regards,
Danijel

[Keith™]

It's possible ... I'll have to look up the reference though

[Keith™]

To get the device context, you use the GetDC API call

Code: [Select]

Public Declare Function GetDC Lib "user32" (ByVal hwnd As Long) As Long

Dim hDC As Long = GetDC(hWndToAutoCAPApplication)

You may have to use IntPtr as the type though ... I have not tried it

[dann.boy.001]

Thank you Keith!

I will try this code, but I am not sure how to get hWndToAutoCAPApplication!

Best regards,
Danijel

[Keith™]

Thank you Keith!

I will try this code, but I am not sure how to get hWndToAutoCAPApplication!

Best regards,
Danijel

ok, sorry, that is the hWnd of the application window you want to modify ... presumably you have a reference to the application window, just not the hDC ... so you should have a hWnd property ... just pass that value to the function.

[jgr]

p/invoke?... Why?:

Code: [Select]

Graphics.FromHwnd
See:
http://msdn.microsoft.com/en-us/library/system.drawing.graphics.fromhwnd%28v=VS.71%29.aspx