Visual Basic Codes

Visual Basic > Forms sample source codes

How to move a control on a form at runtime.

How to move a control on a form at runtime.

'Note: This has only been tested with VB 3 and VB 4-16, if you convert


' Declare these APIs and Constants

Declare Sub ReleaseCapture Lib "user" ()
Declare Function SendMessage& Lib "user" (ByVal hWnd%, ByVal wMsg%, ByVal wParam%, 
lParam As Any)

Const WM_SYSCOMMAND = &H112
Const SC_MOVE = &HF012

' In this example we'll use a picture box, in the MouseDown event add:

Sub Picture1_MouseDown (Button As Integer, Shift As Integer, X As Single, Y As Single)

Dim ret%
If Button = 1 Then
   ReleaseCapture
   ret = SendMessage(Picture1.hWnd, WM_SYSCOMMAND, SC_MOVE, 0)
End If

End Sub

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