Is the size of a Form in Visual Studio designer limited to screen resolution?

Question

Why is it, that in the Visual Studio WinForms designer I cannot increase the size of my Form above the resolution of the screen I am currently working on? I think it should

Answer 1

Deriving from Form, overriding some properties and using interop. This is VB.NET sorry but you get the idea.

Using the derived form you can use "SizeDesign" and "SizeRuntime" properties for design and runtime respectively.

 Imports System.Windows.Forms
Imports System.ComponentModel

Public Class FormEx
    Inherits Form

    Private Declare Function MoveWindow Lib "User32.dll" (ByVal hWnd As IntPtr, ByVal x As Integer, ByVal y As Integer, ByVal w As Integer, ByVal h As Integer, ByVal Repaint As Boolean) As Boolean

    Private Const DEFAULTSIZE_X = 1024
    Private Const DEFAULTSIZE_Y = 768

    Protected Overrides Sub OnHandleCreated(e As System.EventArgs)
        MyBase.OnHandleCreated(e)

        If mSizeRuntime = System.Drawing.Size.Empty Then
            SizeRuntime = New System.Drawing.Size(DEFAULTSIZE_X, DEFAULTSIZE_Y)
        End If

        If mSizeDesign = System.Drawing.Size.Empty Then
            SizeDesign = New System.Drawing.Size(DEFAULTSIZE_X, DEFAULTSIZE_Y)
        End If
    End Sub

     _
    Public Shadows Property Size As System.Drawing.Size

    Private mSizeDesign As System.Drawing.Size = System.Drawing.Size.Empty
     _
    Public Property SizeDesign As System.Drawing.Size
        Get
            Return mSizeDesign
        End Get
        Set(value As System.Drawing.Size)
            mSizeDesign = value
            If Me.DesignMode Then
                MoveWindow(Me.Handle, Me.Left, Me.Top, value.Width, value.Height, True)
            End If
        End Set
    End Property

    Private mSizeRuntime As System.Drawing.Size = System.Drawing.Size.Empty
     _
    Public Property SizeRuntime As System.Drawing.Size
        Get
            Return mSizeRuntime
        End Get
        Set(value As System.Drawing.Size)
            mSizeRuntime = value
            If Not Me.DesignMode Then
                MyBase.Size = value
            End If
        End Set
    End Property

End Class

A.J.