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Hooks and DLLs

, 31 Mar 2001
There is a lot of confusion about how to set up and use global hook functions. This essay attempts to clear up some of these issues.
#ifndef _DEFINED_44E531B1_14D3_11d5_A025_006067718D04
#define _DEFINED_44E531B1_14D3_11d5_A025_006067718D04
#if _MSC_VER > 1000
#pragma once
#ifdef __cplusplus
extern "C" {
#endif // __cplusplus
#ifdef _COMPILING_44E531B1_14D3_11d5_A025_006067718D04
#define LIBSPEC __declspec(dllexport)
#define LIBSPEC __declspec(dllimport)
#endif // _COMPILING_44E531B1_14D3_11d5_A025_006067718D04
   LIBSPEC BOOL setMyHook(HWND hWnd);
   LIBSPEC BOOL clearMyHook(HWND hWnd);
#undef LIBSPEC
#ifdef __cplusplus
#endif // __cplusplus
#define UWM_MOUSEMOVE_MSG _T("UWM_MOUSEMOVE_MSG-44E531B1_14D3_11d5_A025_006067718D04")

// These declarations are because the latest SDK isn't installed...
#ifndef GET_X_LPARAM
#define GET_X_LPARAM(p) ((int)(short)LOWORD(p))
#define GET_Y_LPARAM(p) ((int)(short)HIWORD(p))

#endif // _DEFINED_44E531B1_14D3_11d5_A025_006067718D04

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About the Author

Joseph M. Newcomer

United States United States
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