Visual Basic > Forms sample source codes

Visual Basic Code > Moving a Form With No Title Bar

Moving a Form With No Title Bar

Private Declare Function SendMessage Lib "User32" _
 Alias "SendMessageA" (ByVal hWnd As Long, _
 ByVal wMsg As Long, ByVal wParam As Long, _
 lParam As Any) As Long

Private Declare Sub ReleaseCapture Lib "User32" ()

Const WM_NCLBUTTONDOWN = &HA1
Const HTCAPTION = 2
Private Sub Form_MouseMove(Button As Integer, _
 Shift As Integer, X As Single, Y As Single)

    Dim lngReturnValue As Long

    If Button = 1 Then
        Call ReleaseCapture
        lngReturnValue = SendMessage(Form1.hWnd, _
        WM_NCLBUTTONDOWN, HTCAPTION, 0&)
    End If

End Sub