最新版本：C / C ++ Windows API——获取鼠标位置的窗口句柄(2)

在评论中，有人说您可以使用“ WindowFromPoint”实现此功能，因此可以使用以下代码。

// SpyDemo.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include 
int main()
{
    BOOL ret;
    UINT count;
    /*
    typedef struct tagPOINT
    {
        LONG  x;
        LONG  y;
    } POINT, *PPOINT, NEAR *NPPOINT, FAR *LPPOINT;
    */
    POINT point;
    TCHAR pszFileName[MAX_PATH];
    TCHAR lpClassName[MAX_PATH];
    TCHAR windowText[MAX_PATH];
    while(true) {
        ret = GetCursorPos(&point);
        if (!ret) {
            printf("GetCursorPos -> fail(%ld)\n", GetLastError());
        } else {
            printf("GetCursorPos -> (%ld, %ld)\n", point.x, point.y);
            HWND hwnd = WindowFromPoint(point);
            if (hwnd == NULL || hwnd == INVALID_HANDLE_VALUE) {
                printf("WindowFromPoint point=(%ld, %ld) -> hwnd=%p -> fail(%ld)\n", point.x, point.y, hwnd, GetLastError());
            }
            else {
                printf("WindowFromPoint -> hwnd=%p\n", hwnd);
                /*
                检索与指定的窗口句柄关联的模块的完整路径和文件名称
                WINUSERAPI UINT WINAPI GetWindowModuleFileNameW(
                    _In_ HWND hwnd,
                    _Out_writes_to_(cchFileNameMax, return) LPWSTR pszFileName,
                    _In_ UINT cchFileNameMax
                );
                返回值是复制到缓冲区的字符总数。
                */
                count = GetWindowModuleFileName(hwnd, pszFileName, MAX_PATH);
                _tprintf(_T("GetWindowModuleFileName hwnd=%p -> count=%d, fileName=%s\n"), hwnd, count, pszFileName);
                /*
                WINUSERAPI int WINAPI GetClassName(
                    _In_ HWND hWnd,
                    _Out_writes_to_(nMaxCount, return) LPTSTR lpClassName,
                    _In_ int nMaxCount
                );
                */
                count = GetClassName(hwnd, lpClassName, MAX_PATH);
                _tprintf(_T("GetClassName hwnd=%p -> count=%d, lpClassName=%s\n"), hwnd, count, lpClassName);
                count = GetWindowText(hwnd, windowText, MAX_PATH);
                _tprintf(_T("GetWindowText hwnd=%p -> count=%d, lpClassName=%s\n"), hwnd, count, windowText);
            }
            //Screen（屏幕坐标）到Client（客户区坐标）的转换。
            ret = ScreenToClient(hwnd, &point);
            if (!ret) {
                printf("ScreenToClient hwnd=%p -> fail(%ld)\n", hwnd, GetLastError());
            }
            else {
                printf("ScreenToClient hwnd=%p -> point=(%ld, %ld)\n", hwnd, point.x, point.y);
                //返回父窗口中包含了指定点的第一个子窗口的句柄
                HWND childHwnd = ChildWindowFromPoint(hwnd, point);
                printf("ChildWindowFromPoint hwnd=%p, point=(%ld, %ld) -> childHwnd=%p\n", hwnd, point.x, point.y, childHwnd);
                count = GetClassName(hwnd, lpClassName, MAX_PATH);
                _tprintf(_T("GetClassName hwnd=%p -> count=%d, lpClassName=%s\n"), hwnd, count, lpClassName);
                count = GetWindowText(hwnd, windowText, MAX_PATH);
                _tprintf(_T("GetWindowText hwnd=%p -> count=%d, lpClassName=%s\n"), hwnd, count, windowText);
            }
        }
        Sleep(5000);
    }
    return 0;
}

但是有一个问题：

为什么每次GetWindowModuleFileName的句柄都不同，但是每次获取的模块文件的路径都与当前路径相同。

我希望一位伟大的上帝可以帮助我回答。我很感激。

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