About the ToolbarControl MDI application Sample
[C#]
ChildForm.cs
using ESRI.ArcGIS.Controls;
using System.Windows.Forms;
namespace MDIApplication
{
public class ChildForm : System.Windows.Forms.Form
{
private System.ComponentModel.Container components = null;
private const int WM_ENTERSIZEMOVE = 0x231;
private ESRI.ArcGIS.Controls.AxMapControl axMapControl1; //For resizing
private const int WM_EXITSIZEMOVE = 0x232; //For resizing
public ChildForm()
{
InitializeComponent();
}
protected override void Dispose( bool disposing )
{
if( disposing )
{
if(components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(ChildForm));
this.axMapControl1 = new ESRI.ArcGIS.Controls.AxMapControl();
((System.ComponentModel.ISupportInitialize)(this.axMapControl1)).BeginInit();
this.SuspendLayout();
//
// axMapControl1
//
this.axMapControl1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.axMapControl1.Location = new System.Drawing.Point(0, 0);
this.axMapControl1.Name = "axMapControl1";
this.axMapControl1.OcxState = ((System.Windows.Forms.AxHost.State)(resources.GetObject("axMapControl1.OcxState")));
this.axMapControl1.Size = new System.Drawing.Size(376, 272);
this.axMapControl1.TabIndex = 0;
this.axMapControl1.OnMapReplaced += new ESRI.ArcGIS.Controls.IMapControlEvents2_Ax_OnMapReplacedEventHandler(this.axMapControl1_OnMapReplaced);
//
// ChildForm
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(376, 270);
this.Controls.Add(this.axMapControl1);
this.Name = "ChildForm";
this.ShowInTaskbar = false;
this.Text = "MDIChild";
this.Load += new System.EventHandler(this.ChildForm_Load);
((System.ComponentModel.ISupportInitialize)(this.axMapControl1)).EndInit();
this.ResumeLayout(false);
}
#endregion
private void ChildForm_Load(object sender, System.EventArgs e)
{
//Suppress drawing while resizing
this.SetStyle(ControlStyles.EnableNotifyMessage,true);
axMapControl1.BorderStyle = esriControlsBorderStyle.esriNoBorder;
}
protected override void OnNotifyMessage(System.Windows.Forms.Message m)
{
/*This method of suppressing resize drawing works by examining the windows messages
sent to the form. When a form starts resizing, windows sends the WM_ENTERSIZEMOVE
Windows(message). At this point we suppress drawing to the MapControl and
PageLayoutControl and draw using a "stretchy bitmap". When windows sends the
WM_EXITSIZEMOVE the form is released from resizing and we resume with a full
redraw at the new extent.
Note in DotNet forms we can not simply use the second parameter in a Form_Load
event to automatically detect when a form is resized as follows:
AxPageLayoutControl1.SuppressResizeDrawing(False, Me.Handle.ToInt32)
This results in a System.NullException when the form closes (after layers have been
loaded). This is a limitation caused by .Net's particular implementation of its
windows message pump which conflicts with "windows subclassing" used to watch the
forms window.*/
base.OnNotifyMessage (m);
if (m.Msg == WM_ENTERSIZEMOVE)
{
axMapControl1.SuppressResizeDrawing(true, 0);
}
else if (m.Msg == WM_EXITSIZEMOVE)
{
axMapControl1.SuppressResizeDrawing(false, 0);
}
}
private void axMapControl1_OnMapReplaced(object sender, ESRI.ArcGIS.Controls.IMapControlEvents2_OnMapReplacedEvent e)
{
//Set the forms text
this.Text = "MDIChild (" + axMapControl1.DocumentFilename + ")";
}
}
}
[Visual Basic .NET]
ChildForm.vb
Option Explicit On
Imports ESRI.ArcGIS.Controls
Public Class ChildForm
Inherits System.Windows.Forms.Form
Private Const WM_ENTERSIZEMOVE As Integer = &H231 'For resizing
Private Const WM_EXITSIZEMOVE As Integer = &H232 'For resizing
#Region " Windows Form Designer generated code "
Public Sub New()
MyBase.New()
'This call is required by the Windows Form Designer.
InitializeComponent()
'Add any initialization after the InitializeComponent() call
End Sub
'Form overrides dispose to clean up the component list.
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing Then
If Not (components Is Nothing) Then
components.Dispose()
End If
End If
MyBase.Dispose(disposing)
End Sub
'Required by the Windows Form Designer
Private components As System.ComponentModel.IContainer
'NOTE: The following procedure is required by the Windows Form Designer
'It can be modified using the Windows Form Designer.
'Do not modify it using the code editor.
Friend WithEvents AxMapControl1 As ESRI.ArcGIS.Controls.AxMapControl
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Dim resources As System.Resources.ResourceManager = New System.Resources.ResourceManager(GetType(ChildForm))
Me.AxMapControl1 = New ESRI.ArcGIS.Controls.AxMapControl
CType(Me.AxMapControl1, System.ComponentModel.ISupportInitialize).BeginInit()
Me.SuspendLayout()
'
'AxMapControl1
'
Me.AxMapControl1.Anchor = CType((((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Bottom) _
Or System.Windows.Forms.AnchorStyles.Left) _
Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles)
Me.AxMapControl1.Location = New System.Drawing.Point(0, 0)
Me.AxMapControl1.Name = "AxMapControl1"
Me.AxMapControl1.OcxState = CType(resources.GetObject("AxMapControl1.OcxState"), System.Windows.Forms.AxHost.State)
Me.AxMapControl1.Size = New System.Drawing.Size(384, 280)
Me.AxMapControl1.TabIndex = 0
'
'ChildForm
'
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.ClientSize = New System.Drawing.Size(384, 278)
Me.Controls.Add(Me.AxMapControl1)
Me.Name = "ChildForm"
Me.Text = "MDIChild"
CType(Me.AxMapControl1, System.ComponentModel.ISupportInitialize).EndInit()
Me.ResumeLayout(False)
End Sub
#End Region
Private Sub ChildForm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'Suppress drawing while resizing
Me.SetStyle(ControlStyles.EnableNotifyMessage, True)
AxMapControl1.BorderStyle = esriControlsBorderStyle.esriNoBorder
End Sub
Protected Overrides Sub OnNotifyMessage(ByVal m As System.Windows.Forms.Message)
'This method of suppressing resize drawing works by examining the windows messages
'sent to the form. When a form starts resizing, windows sends the WM_ENTERSIZEMOVE
'Windows(message). At this point we suppress drawing to the MapControl and
'PageLayoutControl and draw using a "stretchy bitmap". When windows sends the
'WM_EXITSIZEMOVE the form is released from resizing and we resume with a full
'redraw at the new extent.
'Note in DotNet forms we can not simply use the second parameter in a Form_Load
'event to automatically detect when a form is resized as follows:
'AxPageLayoutControl1.SuppressResizeDrawing(False, Me.Handle.ToInt32)
'This results in a System.NullException when the form closes (after layers have been
'loaded). This is a limitation caused by .Net's particular implementation of its
'windows message pump which conflicts with "windows subclassing" used to watch the
'forms window.
If (m.Msg = WM_ENTERSIZEMOVE) Then
AxMapControl1.SuppressResizeDrawing(True, 0)
ElseIf (m.Msg = WM_EXITSIZEMOVE) Then
AxMapControl1.SuppressResizeDrawing(False, 0)
End If
End Sub
Private Sub AxMapControl1_OnMapReplaced(ByVal sender As Object, ByVal e As ESRI.ArcGIS.Controls.IMapControlEvents2_OnMapReplacedEvent) Handles AxMapControl1.OnMapReplaced
'Set the forms text
Me.Text = "MDIChild (" + AxMapControl1.DocumentFilename + ")"
End Sub
End Class