GetWindowText(hwnd, lpString, len)会根据传入的第二个参数lpString
判断是ASCII或者Unicode编码选择调用GetWindowTextA(hwnd, lpString, len)，还是GetWindowTextW(hwnd, lpString, len)，所以想获取中文标题直接调用GetWindowTextW()
ASCII GetWindowTextA(hwnd, lpString, len)

Unicode GetWindowTextW(hwnd, lpString, len)

    QString result;// 查找运行窗口句柄QString windowTitle = "微信";//HWND hwnd = FindWindowW(NULL, (LPCWSTR)windowTitle.unicode());//获取前台运行窗口句柄HWND forgroundWindow =  GetForegroundWindow();if(forgroundWindow != NULL){int len = GetWindowTextLength(forgroundWindow) + 1;LPWSTR lpTitle = new WCHAR[len];//使用unicode字符串调用GetWindowTextW(forgroundWindow, lpTitle, len);result = QString::fromWCharArray(lpTitle);
//        cout << result.toStdString() << endl;delete[] lpTitle;if (result == windowTitle){return true;}}