遍历所有顶层窗口

//遍历所有顶层窗口

#include <windows.h>

BOOL CALLBACK OnEnumWindows(HWND hWnd,LPARAM lParam)
{
TCHAR szTitle[100] = {0};
DWORD dwProcessId = 0;
GetWindowThreadProcessId(hWnd,&dwProcessId);
GetWindowText(hWnd,szTitle,100);

if (0 == _tcscmp(_T("计算器"),szTitle))
{
   MessageBox(hWnd,szTitle,_T("OnEnumWindows"),MB_OK);
   PostMessage(hWnd,WM_CLOSE,0,0);
}

return TRUE;
}

int main(int argc, char *argv[])
{
EnumWindows((WNDENUMPROC)OnEnumWindows,(LPARAM)0);
}