la souris

Bonne année a tous .

Ma question est simple .
On peut recuperer la position de la souris avec la fonction GetCursorPos() de façon simple.

Peut on recuperer le fait qu'un bouton de la souris soit appuyé sans passer par les messages windows du type WM_LBUTTONDOWN  ?
Mais par une fonction de type :    bool GetLButtonDown().

Si cette  fonction existe, c'est qu'il faut croire au pere noel.


merci

sur un newsgroup j'ai trouvé :

Pour intercepter les evenement souris ,il faut créer un hook local pour intercepter les messages a l'interieur d'une application.
Ou un hook systeme pour intercepter tous les messages pour toutes les applications.

La fonction est

HHOOK SetWindowsHookEx(      
    int idHook,
    HOOKPROC lpfn,
    HINSTANCE hMod,
    DWORD dwThreadId
);

The SetWindowsHookEx function installs an application-defined hook procedure into a hook chain. You would install a hook procedure to monitor the system for certain types of events. These events are associated either with a specific thread or with all threads in the same desktop as the calling thread.

Parameters

idHook

[in] Specifies the type of hook procedure to be installed. This parameter can be one of the following values.

WH_CALLWNDPROC

Installs a hook procedure that monitors messages before the system sends them to the destination window procedure. For more information, see the CallWndProc hook procedure.

WH_CALLWNDPROCRET

Installs a hook procedure that monitors messages after they have been processed by the destination window procedure. For more information, see the CallWndRetProc hook procedure.

WH_CBT

Installs a hook procedure that receives notifications useful to a computer-based training (CBT) application. For more information, see the CBTProc hook procedure.

WH_DEBUG

Installs a hook procedure useful for debugging other hook procedures. For more information, see the DebugProc hook procedure.

WH_FOREGROUNDIDLE

Installs a hook procedure that will be called when the application's foreground thread is about to become idle. This hook is useful for performing low priority tasks during idle time. For more information, see the ForegroundIdleProc hook procedure.

WH_GETMESSAGE

Installs a hook procedure that monitors messages posted to a message queue. For more information, see the GetMsgProc hook procedure.

WH_JOURNALPLAYBACK

Installs a hook procedure that posts messages previously recorded by a WH_JOURNALRECORD hook procedure. For more information, see the JournalPlaybackProc hook procedure.

WH_JOURNALRECORD

Installs a hook procedure that records input messages posted to the system message queue. This hook is useful for recording macros. For more information, see the JournalRecordProc hook procedure.

WH_KEYBOARD

Installs a hook procedure that monitors keystroke messages. For more information, see the KeyboardProc hook procedure.

WH_KEYBOARD_LL

Windows NT/2000/XP: Installs a hook procedure that monitors low-level keyboard input events. For more information, see the LowLevelKeyboardProc hook procedure.

WH_MOUSE

Installs a hook procedure that monitors mouse messages. For more information, see the MouseProc hook procedure.

WH_MOUSE_LL

Windows NT/2000/XP: Installs a hook procedure that monitors low-level mouse input events. For more information, see the LowLevelMouseProc hook procedure.

WH_MSGFILTER

Installs a hook procedure that monitors messages generated as a result of an input event in a dialog box, message box, menu, or scroll bar. For more information, see the MessageProc hook procedure.

WH_SHELL

Installs a hook procedure that receives notifications useful to shell applications. For more information, see the ShellProc hook procedure.

WH_SYSMSGFILTER

Installs a hook procedure that monitors messages generated as a result of an input event in a dialog box, message box, menu, or scroll bar. The hook procedure monitors these messages for all applications in the same desktop as the calling thread. For more information, see the SysMsgProc hook procedure.

lpfn

[in] Pointer to the hook procedure. If the dwThreadId parameter is zero or specifies the identifier of a thread created by a different process, the lpfn parameter must point to a hook procedure in a DLL. Otherwise, lpfn can point to a hook procedure in the code associated with the current process.

hMod

[in] Handle to the DLL containing the hook procedure pointed to by the lpfn parameter. The hMod parameter must be set to NULL if the dwThreadId parameter specifies a thread created by the current process and if the hook procedure is within the code associated with the current process.

dwThreadId

[in] Specifies the identifier of the thread with which the hook procedure is to be associated. If this parameter is zero, the hook procedure is associated with all existing threads running in the same desktop as the calling thread.

Return Value

If the function succeeds, the return value is the handle to the hook procedure.

If the function fails, the return value is NULL. To get extended error information, call