Win32 枚举所有子窗口二种方法

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方法一通过API GetWindow 递归枚举：

VOID OutputWindow(HWND hWnd)
{
TCHAR szTitle[256] = {0};
GetWindowText(hWnd, szTitle, sizeof(szTitle) / sizeof(TCHAR));

TCHAR szBuffer[MAX_PATH] = {0};
_sntprintf(szBuffer, sizeof(szBuffer) / sizeof(TCHAR) - 1, _T("HWND(%x), Title(%s)/n"), (UINT)hWnd, szTitle);

OutputDebugString(szBuffer);
}

void EnumChild(HWND hParent)
{
if(hParent != NULL)
{
HWND hChild = GetWindow(hParent, GW_CHILD);
while(hChild != NULL)
{
EnumChild(hChild);

OutputWindow(hChild);

hChild = GetWindow(hChild, GW_HWNDNEXT);
}
}
}

方法二通过API EnumChildWindows：

BOOL CALLBACK EnumChildProc(HWND hwnd, LPARAM lParam)
{
if(IsWindowVisible(hwnd))
{
  char sName[128]={0};
  GetClassName(hwnd, sName, 128);
  if(stricmp(sName, "xx")==0)
  {
   *(HWND*)lParam=hwnd;
  }
}
return TRUE;
}

EnumChildWindows(hwnd, EnumChildProc, (LPARAM)&parentwnd);

强烈推荐使用方法二！