SAMPLE: Demonstration of WH_CALLWNDPROC & WH_GETMESSAGE Hooks

 Last reviewed: February 15, 1996
Article ID: Q76588
The information in this article applies to:
  • Microsoft Windows Software Development Kit (SDK) for Windows versions 3.0 and 3.1

HOOKALL is a sample program in the Software Library that demonstrates the use of WH_GETMESSAGE and WH_CALLWNDPROC hooks. The sample contains the code for a dynamic-link library (DLL) with functions to set and remove the hooks, as well as the hook filter functions. The filter functions use OutputDebugString to display a message when they receive a WM_LBUTTONDOWN message. The sample also contains code for an application that tests the DLL.

Download HOOKALL.EXE, a self-extracting file, from the Microsoft Software Library (MSL) on the following services:

  • Microsoft Download Service (MSDL) 

          Dial (206) 936-6735 to connect to MSDL
      Download HOOKALL.EXE (size: 21473 bytes)
  • Internet (anonymous FTP) 

          ftp ftp.microsoft.com
      Change to the \SOFTLIB\MSLFILES directory
      Get HOOKALL.EXE (size: 21473 bytes)

Additional reference words: 3.00 3.10 softlib HOOKALL.EXE
KBCategory: kbprg kbfile
KBSubcategory: UsrHks

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Last reviewed: February 15, 1996
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