通过类名和窗口名查找指定窗口

通过类名和窗口名查找指定窗口

BOOL CALLBACK MyEnumProc(HWND hwnd, LPARAM lParam);
class CFindHWND
{
public:
  CFindHWND();
  ~CFindHWND();
  HWND FindWindow(HWND parent, CString wnd_class, CString wnd_name);
  BOOL EnumProc(HWND, LPARAM);
protected:
  BOOL IsEqual(HWND hwnd, CString wnd_class, CString wnd_name);
private:
  BOOL  is_finded;
  HWND finded_hwnd;

  CString find_wnd_class;
  CString find_wnd_name;
};

CFindHWND::CFindHWND():is_finded(FALSE),finded_hwnd(FALSE)
{
}

CFindHWND::~CFindHWND()
{
}

HWND CFindHWND::FindWindow(HWND parent, CString wnd_class, CString wnd_name)
{
  find_wnd_class = wnd_class;
  find_wnd_name = wnd_name;
  EnumChildWindows(parent, MyEnumProc, (LPARAM)this);
  return finded_hwnd;
}

BOOL CFindHWND::IsEqual(HWND hwnd, CString wnd_class, CString wnd_name)
{
  TCHAR tmp_name[MAX_PATH] = {0};
  TCHAR tmp_class[MAX_PATH] = {0};
  
  GetWindowText(hwnd, tmp_name, MAX_PATH);
  if (wnd_name.CompareNoCase(tmp_name) == 0) {
    GetClassName(hwnd, tmp_class, MAX_PATH);
    if (wnd_class.CompareNoCase(tmp_class) == 0) return TRUE;
  }

  return FALSE;
}

BOOL CFindHWND::EnumProc(HWND hwnd, LPARAM)
{
  if (is_finded)return FALSE;
  if (IsEqual(hwnd,find_wnd_class, find_wnd_name))
  {
    is_finded = TRUE;
    finded_hwnd = hwnd;
    return FALSE;
  }
  
  if(::GetTopWindow(hwnd))
  {
    EnumChildWindows(hwnd, MyEnumProc, NULL);
  }

  return TRUE;
}

BOOL CALLBACK MyEnumProc(HWND hwnd, LPARAM lParam)
{
  CFindHWND* ptr = (CFindHWND*)lParam;
  BOOL is_continue = FALSE;
  if(ptr){
    is_continue = ptr->EnumProc(hwnd, lParam);
  }

  return is_continue;
}

使用：

CFindHWND find;
HWND hwnd = find.FindWindowW(GetDesktopWindow()->m_hWnd, L"Chrome_RenderWidgetHostHWND", L"Chrome Legacy Window");