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
Download Visual Studio Add-In

GetDC (gdi32)
 
.
Summary
This function retrieves a handle to a display device context (DC) for the client area of the specified window. The display device context can be used in subsequent graphics display interface (GDI) functions to draw in the client area of the window.

C# Signature:

[DllImport("user32.dll", SetLastError=true)]
static extern IntPtr GetDC(IntPtr hWnd);

VB Signature:

<DllImport("user32.dll")> _
Public Function GetDC(ByVal hwnd As IntPtr) As IntPtr
End Function

VB Signature

Public Declare Function GetDC Lib "user32.dll" _
         (ByVal hWnd As Long) As Long

User-Defined Types:

None.

Alternative Managed API:

Do you know one? Please contribute it!

Notes:

Use GetWindowDC(IntPtr hWnd); for taking the dc for the whole window since this function only gets the client area of the window.

Tips & Tricks:

Use IntPtr.Zero for hWnd to get a dc for the whole screen(Thanks to Mr.Charles Petzold.).

Please add some!

Sample Code:

IntPtr dc = GetDC(hWnd);

MoveToEx(dc,10,23,IntPtr.Zero);

LineTo(100,300);

Documentation
GetDC 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