Search
Module:
Directory

   Desktop Functions:

   Smart Device Functions:


Show Recent Changes
Subscribe (RSS)
Misc. Pages
Comments
FAQ
Helpful Tools
Playground
Suggested Reading
Website TODO List
Support Forum
Download Visual Studio Add-In

Terms of Use
Privacy Policy
oledraw (ole32)
 
.
Summary

C# Signature:

       [DllImport("ole32.dll")]
       static extern int OleDraw([MarshalAs(UnmanagedType.IUnknown)] object pUnk,
      uint dwAspect, IntPtr hdcDraw, [In] ref RECT lprcBounds);

User-Defined Types:

None.

Notes:

None.

Tips & Tricks:

Please add some!

Sample Code:

       [DllImport("ole32.dll")]
       public static extern int OleDraw(IntPtr pUnk, int dwAspect, IntPtr hdcDraw, ref Rectangle lprcBounds);

       /// <summary>
       /// Creates a bitmap from the supplied ActiveX control using OleDraw
       /// </summary>
       /// <param name="c"></param>
       public Image CreateImage(AxHost c)
       {
           Rectangle rect = new Rectangle(0,
                          0,
                          c.ClientRectangle.Width,
                          c.ClientRectangle.Height);

           Bitmap bmp = new Bitmap(rect.Width, rect.Height);
           Graphics graphics = Graphics.FromImage(bmp);
           IntPtr pUnk = Marshal.GetIUnknownForObject(c.GetOcx());
           IntPtr hdc = graphics.GetHdc();

           OleDraw(pUnk, 1, hdc, ref rect);

           Marshal.Release(pUnk);
           graphics.ReleaseHdc(hdc);

           return bmp;
       }        

Alternative Managed API:

Do you know one? Please contribute it!

Documentation
OleDraw on MSDN

Please edit this page!

Do you have...

  • helpful tips or sample code to share for using this API in managed code?
  • corrections to the existing content?
  • variations of the signature you want to share?
  • additional languages you want to include?

Select "Edit This Page" on the right hand toolbar and edit it! Or add new pages containing supporting types needed for this API (structures, delegates, and more).

 
Access PInvoke.net directly from VS:
Terms of Use
Edit This Page
Find References
Show Printable Version
Revisions