How to load 2 CVI panels as child window to a parent window created by VC++?

Hello, I want to load 2 CVI panels as child window to a main window, which is created by VC++.
the CVI panel is in a dll file(created by LabCVI).
the Load child panel routine is something like following,
int __stdcall RunDLLUI (int* hParent )
int hpanel;
HWND hWnd;
if ((hpanel = LoadPanelEx (0, "guidlluir.uir", PANEL, __CVIUserHInst)) < 0)
return 0;
// set parent
if ( hParent != 0 )
GetPanelAttribute (hpanel, ATTR_SYSTEM_WINDOW_HANDLE, (int *)&hWnd);
SetParent( hWnd, (HWND)hParent);
DisplayPanel (hpanel);
// RunUserInterface ();
return 1;
The problem is, if I call RunUserInterface (), then no window shown, it is, I think, that this routine blocks both the other panel to be created and the main window to be shown. but if I don't call it, the 2 child windows won't response mouse event. seems no message dispatching for them.
so how can I get what I want, thx a loooooooooooooooooooooooot.

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In this case, I would recommend you use this way below.
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Here is a simple sample.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace _150313AutoSizeMdiChiledForm
public partial class MainForm : Form
public MainForm()
InitializeComponent();
Form1 f1 = new Form1();
Form2 f2 = new Form2();
Form3 f3 = new Form3();
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f1.TopLevel = false;
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f1.Show();
f2.TopLevel = false;
this.splitContainer2.Panel2.Controls.Add(f2);
f2.Size = this.splitContainer2.Panel2.ClientSize;
f2.Show();
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this.splitContainer1.Panel2.Controls.Add(f3);
f3.Size = this.splitContainer1.Panel2.ClientSize;
f3.Show();
private void MainForm_Resize(object sender, EventArgs e)
f1.Size = this.splitContainer2.Panel1.ClientSize;
f2.Size = this.splitContainer2.Panel2.ClientSize;
f3.Size = this.splitContainer1.Panel2.ClientSize;
Designer code.
namespace _150313AutoSizeMdiChiledForm
partial class MainForm
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
if (disposing && (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()
this.splitContainer1 = new System.Windows.Forms.SplitContainer();
this.splitContainer2 = new System.Windows.Forms.SplitContainer();
((System.ComponentModel.ISupportInitialize)(this.splitContainer1)).BeginInit();
this.splitContainer1.Panel1.SuspendLayout();
this.splitContainer1.SuspendLayout();
((System.ComponentModel.ISupportInitialize)(this.splitContainer2)).BeginInit();
this.splitContainer2.SuspendLayout();
this.SuspendLayout();
// splitContainer1
this.splitContainer1.Dock = System.Windows.Forms.DockStyle.Fill;
this.splitContainer1.Location = new System.Drawing.Point(0, 0);
this.splitContainer1.Name = "splitContainer1";
this.splitContainer1.Orientation = System.Windows.Forms.Orientation.Horizontal;
// splitContainer1.Panel1
this.splitContainer1.Panel1.Controls.Add(this.splitContainer2);
this.splitContainer1.Size = new System.Drawing.Size(607, 411);
this.splitContainer1.SplitterDistance = 198;
this.splitContainer1.TabIndex = 0;
// splitContainer2
this.splitContainer2.Dock = System.Windows.Forms.DockStyle.Fill;
this.splitContainer2.Location = new System.Drawing.Point(0, 0);
this.splitContainer2.Name = "splitContainer2";
this.splitContainer2.Size = new System.Drawing.Size(607, 198);
this.splitContainer2.SplitterDistance = 294;
this.splitContainer2.TabIndex = 0;
// MainForm
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(607, 411);
this.Controls.Add(this.splitContainer1);
this.Name = "MainForm";
this.Text = "MainForm";
this.Load += new System.EventHandler(this.MainForm_Load);
this.Resize += new System.EventHandler(this.MainForm_Resize);
this.splitContainer1.Panel1.ResumeLayout(false);
((System.ComponentModel.ISupportInitialize)(this.splitContainer1)).EndInit();
this.splitContainer1.ResumeLayout(false);
((System.ComponentModel.ISupportInitialize)(this.splitContainer2)).EndInit();
this.splitContainer2.ResumeLayout(false);
this.ResumeLayout(false);
#endregion
private System.Windows.Forms.SplitContainer splitContainer1;
private System.Windows.Forms.SplitContainer splitContainer2;
Result.
You could download it form http://1drv.ms/1Mwwibp.
It is quite similar with the one for tiling, you could edit it to fit your requirements.
Regards,
Carl
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Ned Murphy Thank you very Much .It is working .Great advice

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