如何使用winapi在Windows中获取当前活动窗口的进程名称？

Question

我试图在Windows中使用winapi获取当前窗口或活动窗口以及该窗口的进程名称.

所以,我能够获得活动窗口GetForegroundWindow()并且我正在使用OpenProcess()以获取进程,问题是OpenProcess需要进程ID,所以我虽然我可以使用GetProcessId()但是这个接收窗口的HANDLE类型我有HWND类型的当前窗口.

我尝试了几件事,但无法使其发挥作用.所以任何人都可以告诉我如何在HWND中获取窗口的进程ID？或者获取当前窗口的句柄？

我将代码保留在这里,以防有些人看到可能对我有帮助的解决方案.我正在使用Qt和C++

char wnd_title[256];
HWND hwnd=GetForegroundWindow(); // get handle of currently active window
GetWindowText(hwnd,wnd_title,sizeof(wnd_title));
HANDLE Handle = OpenProcess(
                  PROCESS_QUERY_INFORMATION | PROCESS_VM_READ,
                  FALSE,
                  GetProcessId(hwnd) // GetProcessId is returning 0
                );
if (Handle)
{
  TCHAR Buffer[MAX_PATH];
  if (GetModuleFileNameEx(Handle, 0, Buffer, MAX_PATH))
  {
    printf("Paht: %s", Buffer);
    // At this point, buffer contains the full path to the executable
  }
  CloseHandle(Handle);
}

Answer 1

您可以使用GetWindowThreadProcessId(),它接收HWND并输出窗口拥有过程的ID.

例如:

#include <tchar.h>

TCHAR wnd_title[256];
HWND hwnd = GetForegroundWindow(); // get handle of currently active window
GetWindowTextA(hwnd, wnd_title, 256);

DWORD dwPID;
GetWindowThreadProcessId(hwnd, &dwPID);

HANDLE Handle = OpenProcess(
                  PROCESS_QUERY_INFORMATION | PROCESS_VM_READ,
                  FALSE,
                  dwPID
                );
if (Handle)
{
    TCHAR Buffer[MAX_PATH];
    if (GetModuleFileNameEx(Handle, 0, Buffer, MAX_PATH))
    {
        _tprintf(_T("Path: %s"), Buffer);
        // At this point, buffer contains the full path to the executable
    }
    CloseHandle(Handle);
}