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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.
hooks.zip
HOTT
hook
hook.dsp
hook.dsw
MouseHook
MouseHook.dsp
res
captured.cur
fleeing.cur
hook.ico
//Microsoft Developer Studio generated resource script.
//
#include "resource.h"

#define APSTUDIO_READONLY_SYMBOLS
/////////////////////////////////////////////////////////////////////////////
//
// Generated from the TEXTINCLUDE 2 resource.
//
#include "afxres.h"

/////////////////////////////////////////////////////////////////////////////
#undef APSTUDIO_READONLY_SYMBOLS

/////////////////////////////////////////////////////////////////////////////
// English (U.S.) resources

#if !defined(AFX_RESOURCE_DLL) || defined(AFX_TARG_ENU)
#ifdef _WIN32
LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
#pragma code_page(1252)
#endif //_WIN32

#ifdef APSTUDIO_INVOKED
/////////////////////////////////////////////////////////////////////////////
//
// TEXTINCLUDE
//

1 TEXTINCLUDE DISCARDABLE 
BEGIN
    "resource.h\0"
END

2 TEXTINCLUDE DISCARDABLE 
BEGIN
    "#include ""afxres.h""\r\n"
    "\0"
END

3 TEXTINCLUDE DISCARDABLE 
BEGIN
    "#define _AFX_NO_SPLITTER_RESOURCES\r\n"
    "#define _AFX_NO_OLE_RESOURCES\r\n"
    "#define _AFX_NO_TRACKER_RESOURCES\r\n"
    "#define _AFX_NO_PROPERTY_RESOURCES\r\n"
    "\r\n"
    "#if !defined(AFX_RESOURCE_DLL) || defined(AFX_TARG_ENU)\r\n"
    "#ifdef _WIN32\r\n"
    "LANGUAGE 9, 1\r\n"
    "#pragma code_page(1252)\r\n"
    "#endif //_WIN32\r\n"
    "#include ""res\\hook.rc2""  // non-Microsoft Visual C++ edited resources\r\n"
    "#include ""afxres.rc""         // Standard components\r\n"
    "#endif\r\n"
    "\0"
END

#endif    // APSTUDIO_INVOKED


/////////////////////////////////////////////////////////////////////////////
//
// Icon
//

// Icon with lowest ID value placed first to ensure application icon
// remains consistent on all systems.
IDR_MAINFRAME           ICON    DISCARDABLE     "res\\hook.ico"

/////////////////////////////////////////////////////////////////////////////
//
// Dialog
//

IDD_ABOUTBOX DIALOG DISCARDABLE  0, 0, 235, 55
STYLE DS_MODALFRAME | WS_POPUP | WS_CAPTION | WS_SYSMENU
CAPTION "About hook"
FONT 8, "MS Sans Serif"
BEGIN
    ICON            IDR_MAINFRAME,IDC_STATIC,11,17,20,20
    LTEXT           "hook Version 1.0",IDC_STATIC,40,10,119,8,SS_NOPREFIX
    LTEXT           "Copyright � 2001, Joseph M. Newcomer",IDC_STATIC,40,25,
                    137,8
    DEFPUSHBUTTON   "OK",IDOK,178,7,50,14,WS_GROUP
END

IDD_HOOK_DIALOG DIALOGEX 0, 0, 123, 95
STYLE DS_MODALFRAME | WS_MINIMIZEBOX | WS_POPUP | WS_VISIBLE | WS_CAPTION | 
    WS_SYSMENU
EXSTYLE WS_EX_APPWINDOW
CAPTION "Mouse Hook"
FONT 8, "MS Sans Serif", 0, 0, 0x1
BEGIN
    CTEXT           "",IDC_XY,16,0,62,14,SS_CENTERIMAGE,WS_EX_CLIENTEDGE
    CONTROL         "&Enable",IDC_ENABLE,"Button",BS_AUTOCHECKBOX | 
                    WS_TABSTOP,80,1,38,10
    CONTROL         "",IDC_CAT,"Static",SS_BLACKRECT | SS_NOTIFY | SS_SUNKEN,
                    3,40,117,52
    LTEXT           "Click the left mouse button to release the mouse",
                    IDC_HINT,3,17,117,18,NOT WS_VISIBLE
    PUSHBUTTON      "?",IDC_HELPME,1,0,12,14
END

IDD_HELP DIALOG DISCARDABLE  0, 0, 185, 77
STYLE DS_MODALFRAME | WS_POPUP | WS_CAPTION | WS_SYSMENU
CAPTION "Help"
FONT 8, "MS Sans Serif"
BEGIN
    DEFPUSHBUTTON   "OK",IDOK,134,62,50,14
    LTEXT           "This shows how to hook mouse events. Check the 'enable' button to start mouse tracking. Be careful! Get close enough for the cat to capture the mouse and it will! (Use the left mouse button to escape)",
                    IDC_STATIC,1,1,181,38
    ICON            IDR_MAINFRAME,IDC_STATIC,2,56,20,20
    CTEXT           "Copyright � 2001, Joseph M. Newcomer",IDC_STATIC,0,51,
                    185,8
END


#ifndef _MAC
/////////////////////////////////////////////////////////////////////////////
//
// Version
//

VS_VERSION_INFO VERSIONINFO
 FILEVERSION 1,0,0,1
 PRODUCTVERSION 1,0,0,1
 FILEFLAGSMASK 0x3fL
#ifdef _DEBUG
 FILEFLAGS 0x1L
#else
 FILEFLAGS 0x0L
#endif
 FILEOS 0x4L
 FILETYPE 0x1L
 FILESUBTYPE 0x0L
BEGIN
    BLOCK "StringFileInfo"
    BEGIN
        BLOCK "040904b0"
        BEGIN
            VALUE "Comments", "\0"
            VALUE "CompanyName", "\0"
            VALUE "FileDescription", "hook MFC Application\0"
            VALUE "FileVersion", "1, 0, 0, 1\0"
            VALUE "InternalName", "hook\0"
            VALUE "LegalCopyright", "Copyright (C) 2001, Joseph M. Newcomer\0"
            VALUE "LegalTrademarks", "\0"
            VALUE "OriginalFilename", "hook.EXE\0"
            VALUE "PrivateBuild", "\0"
            VALUE "ProductName", "hook Application\0"
            VALUE "ProductVersion", "1, 0, 0, 1\0"
            VALUE "SpecialBuild", "\0"
        END
    END
    BLOCK "VarFileInfo"
    BEGIN
        VALUE "Translation", 0x409, 1200
    END
END

#endif    // !_MAC


/////////////////////////////////////////////////////////////////////////////
//
// DESIGNINFO
//

#ifdef APSTUDIO_INVOKED
GUIDELINES DESIGNINFO DISCARDABLE 
BEGIN
    IDD_ABOUTBOX, DIALOG
    BEGIN
        LEFTMARGIN, 7
        RIGHTMARGIN, 228
        TOPMARGIN, 7
        BOTTOMMARGIN, 48
    END

    IDD_HOOK_DIALOG, DIALOG
    BEGIN
        LEFTMARGIN, 7
        RIGHTMARGIN, 116
        TOPMARGIN, 7
        BOTTOMMARGIN, 88
    END

    IDD_HELP, DIALOG
    BEGIN
        LEFTMARGIN, 7
        RIGHTMARGIN, 178
        TOPMARGIN, 7
        BOTTOMMARGIN, 70
    END
END
#endif    // APSTUDIO_INVOKED


/////////////////////////////////////////////////////////////////////////////
//
// Cursor
//

IDC_CAPTURED            CURSOR  DISCARDABLE     "res\\captured.cur"
IDC_FLEEING             CURSOR  DISCARDABLE     "res\\fleeing.cur"

/////////////////////////////////////////////////////////////////////////////
//
// String Table
//

STRINGTABLE DISCARDABLE 
BEGIN
    IDS_ABOUTBOX            "&About hook..."
END

#endif    // English (U.S.) resources
/////////////////////////////////////////////////////////////////////////////



#ifndef APSTUDIO_INVOKED
/////////////////////////////////////////////////////////////////////////////
//
// Generated from the TEXTINCLUDE 3 resource.
//
#define _AFX_NO_SPLITTER_RESOURCES
#define _AFX_NO_OLE_RESOURCES
#define _AFX_NO_TRACKER_RESOURCES
#define _AFX_NO_PROPERTY_RESOURCES

#if !defined(AFX_RESOURCE_DLL) || defined(AFX_TARG_ENU)
#ifdef _WIN32
LANGUAGE 9, 1
#pragma code_page(1252)
#endif //_WIN32
#include "res\hook.rc2"  // non-Microsoft Visual C++ edited resources
#include "afxres.rc"         // Standard components
#endif

/////////////////////////////////////////////////////////////////////////////
#endif    // not APSTUDIO_INVOKED

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Joseph M. Newcomer

United States United States
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