假如窗體B已經打開,在加載窗體A時用下面這句就可以的:
FormA.show vbModal
如果窗體B未打開,就要在加載窗體A時調用一個API:
Public Declare Function SetWindowPos Lib "user32" (ByVal hwnd As Long, ByVal hWndInsertAfter As Long, ByVal x As Long, ByVal y As Long, ByVal cx As Long, ByVal cy As Long, ByVal wFlags As Long) As Long
Public Const HWND_NOTOPMOST = -2
Public Const HWND_TOPMOST = -1
Public Const SWP_NOMOVE = &H2
Public Const SWP_NOSIZE = &H1
Public Const flag = SWP_NOMOVE Or SWP_NOSIZE
Private Sub Form_Load()
SetWindowPos Me.hwnd, HWND_TOPMOST, 0, 0, 0, 0, flag
End Sub