Resize the Drop-Down List Area of Combo Boxes

Resize the Drop-Down List Area of Combo Boxes

VB doesn’t provide a ListRows property, so if you need to display more than eight default items in a combobox drop-down list, use this procedure to increase the size of the combo box window:

 Option ExplicitType POINTAPI        x As Long        y As LongEnd TypeType RECT        Left As Long        Top As Long        Right As Long        Bottom As LongEnd TypeDeclare Function MoveWindow Lib _        "user32" (ByVal hwnd As Long, _        ByVal x As Long, ByVal y As Long, _        ByVal nWidth As Long, _        ByVal nHeight As Long, _        ByVal bRepaint As Long) As LongDeclare Function GetWindowRect Lib _        "user32" (ByVal hwnd As Long, _        lpRect As RECT) As LongDeclare Function ScreenToClient Lib _        "user32" (ByVal hwnd As Long, _        lpPoint As POINTAPI) As LongPublic Sub Size_Combo(rForm As Form, _        rCbo As ComboBox)        Dim pt As POINTAPI        Dim rec As RECT        Dim iItemWidth As Integer        Dim iItemHeight As Integer        Dim iOldScaleMode As Integer        'Change the Scale Mode on the form         'to Pixels        iOldScaleMode = rForm.ScaleMode        rForm.ScaleMode = 3        iItemWidth = rCbo.Width        'Set the new height of the combo box        iItemHeight = rForm.ScaleHeight - _                rCbo.Top - 5        rForm.ScaleMode = iOldScaleMode        'Get the coordinates relative to the         'screen        Call GetWindowRect(rCbo.hwnd, rec)        pt.x = rec.Left        pt.y = rec.Top        'then the coordinates relative to         'the form.        Call ScreenToClient(rForm.hwnd, pt)        'Resize the combo box        Call MoveWindow(rCbo.hwnd, pt.x, _                pt.y, iItemWidth, iItemHeight, 1)End Sub
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