【原创】Enabled激活灰色菜单及按钮

bool bstart=false;
 
void CEnabledDlg::OnEnable() 
{
 
	if (bstart)
	{
		KillTimer(1);
		SetDlgItemText(IDC_ENABLE,"激活[开启]");
	}
	else
	{
		SetTimer(1, 500, NULL);
		SetDlgItemText(IDC_ENABLE,"激活[关闭]");
	}
	bstart=!bstart;
}
 
BOOL CALLBACK EnumChildProc(HWND hwnd, LPARAM lParam)
{
	if (::IsWindowEnabled(hwnd)==false)
		::EnableWindow(hwnd,true);
 
	return true;
}
 
BOOL CEnabledDlg::DestroyWindow() 
{
	KillTimer(1);
	return CDialog::DestroyWindow();
}
 
void EnMenu(HMENU hMenu)
{
	int i,subs;
	subs = ::GetMenuItemCount(hMenu);
	for (i=0; i<subs ; i++)
	{
		::EnableMenuItem(hMenu, i, MF_ENABLED | MF_BYPOSITION);
		HMENU hMenu2 = ::GetSubMenu(hMenu, i);
		int subs2 = ::GetMenuItemCount(hMenu2);
		if (subs2>0)
		{
			EnMenu(hMenu2);
		}
	}
}
 
void CEnabledDlg::OnTimer(UINT nIDEvent) 
{
	HWND hwnd = ::GetForegroundWindow();
	::EnumChildWindows(hwnd,EnumChildProc,0);
	HMENU  hMenu;
	hMenu =::GetMenu(hwnd);
	EnMenu(hMenu);
	CDialog::OnTimer(nIDEvent);
}
</subs>