Question

我手上有一些代码可以全局打印鼠标坐标（使用WH_MOUSE_LL）。我的目标是使用WH_MOUSE而不是WH_MOUSE_LL，因为（从我读过的内容）它更快。我已经阅读了论坛，当使用WH_MOUSE时，它需要在DLL中声明以实现全局效果，但是，当在程序中使用时，它应该在声明它的应用程序上工作，但它不起作用（它当我只是将WH_MOUSE_LL更改为WH_MOUSE时，不打印任何内容。这是代码：

#define _WIN32_WINNT 0x0400
#pragma comment( lib, "user32.lib" )

#include <windows.h>
#include <stdio.h>

HHOOK hMouseHook;

LRESULT CALLBACK mouseProc (int nCode, WPARAM wParam, LPARAM lParam)
{
    MOUSEHOOKSTRUCT * pMouseStruct = (MOUSEHOOKSTRUCT *)lParam;
    if (pMouseStruct != NULL){
        if(wParam == WM_LBUTTONDOWN)
        {
            printf( "clicked" ); 
        }
        printf("Mouse position X = %d  Mouse Position Y = %d\n", pMouseStruct->pt.x,pMouseStruct->pt.y);
    }
    return CallNextHookEx(hMouseHook, nCode, wParam, lParam);
}

DWORD WINAPI MyMouseLogger(LPVOID lpParm)
{
    HINSTANCE hInstance = GetModuleHandle(NULL);

    // here I put WH_MOUSE instead of WH_MOUSE_LL
    hMouseHook = SetWindowsHookEx( WH_MOUSE_LL, mouseProc, hInstance, NULL );

    MSG message;
    while (GetMessage(&message,NULL,0,0)) {
        TranslateMessage( &message );
        DispatchMessage( &message );
    }

    UnhookWindowsHookEx(hMouseHook);
    return 0;
}

int main(int argc, char** argv)
{
    HANDLE hThread;
    DWORD dwThread;

    hThread = CreateThread(NULL,NULL,(LPTHREAD_START_ROUTINE)MyMouseLogger, (LPVOID) argv[0], NULL, &dwThread);
    if (hThread)
        return WaitForSingleObject(hThread,INFINITE);
    else
        return 1;

}

Answer 1

// here I put WH_MOUSE instead of WH_MOUSE_LL
hMouseHook = SetWindowsHookEx( WH_MOUSE_LL, mouseProc, hInstance, NULL );

还必须将第四个参数更改为GetCurrentThreadId（）以使其成为本地参数。

Answer 2

因为你有一个“主”，我的猜测是你需要把它变成一个dll才能使它适用于* _LL类型以外的消息

Understanding the low-level mouse and keyboard hook (win32)

http://developer-resource.blogspot.com/2008/07/setwindowshookex-example.html有一个dll示例

WH_MOUSE的SetWindowsHookEx

2 个答案: