Help: floating modeless dialog in Word add-in (C#)

[Alex]

Hello,

I am writing a Word add-in in C#.
I am trying to create a dialog window that will behave similarly to the "Find" dialog in Word or Visual Studio
(actually, I try to mimic the Visual Studio "find" as it does not appear on the taskbar).
That is:
- The dialog is modeless (the user can continue working in the application when it is open).
- The dialog is always on top of the application window (but not on top of other applications).

So far I am failing miserably.

What am I doing wrong?

Here are the relevant parts of the code:

////////// code begins //////////

using System;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using Extensibility;
using Microsoft.Office.Core;
using Word = Microsoft.Office.Interop.Word;

[GuidAttribute("3C6ED867-A0F7-4747-BBAA-34D1D8FA2E3E"), ProgId("MyAddin1.Connect")]
public class Connect : Object, Extensibility.IDTExtensibility2 {
public void OnConnection(object application, Extensibility.ext_ConnectMode connectMode, object addInInst, ref System.Array custom)
{
applicationObject = (Word.Application)application;
addInInstance = addInInst;
if (connectMode != Extensibility.ext_ConnectMode.ext_cm_Startup) {
OnStartupComplete(ref custom);
}
}

public void OnStartupComplete(ref System.Array custom)
{
applicationObject.CustomizationContext = applicationObject.ActiveDocument;
CommandBar commandBar = applicationObject.CommandBars.Add("My Command Bar", MsoBarPosition.msoBarTop, false, false);
CommandBarButton button = (CommandBarButton) commandBar.Controls.Add(MsoControlType.msoControlButton, missing, missing, missing, true);
button.Tag = "Launch Panel";
button.Click += new _CommandBarButtonEvents_ClickEventHandler(LaunchPanel);
commandBar.Visible = true;
}

private void LaunchPanel(CommandBarButton button, ref bool cancel)
{
string caption = applicationObject.ActiveWindow.Caption + " - " + applicationObject.Caption;
Form1 form = new Form1(ref caption);
form.Show();
}

private Word.Application applicationObject;
private object addInInstance;
static object missing = System.Reflection.Missing.Value;
}

public class Form1 : System.Windows.Forms.Form
{
public Form1(ref string caption)
{
InitializeComponent();

IntPtr hwnd = Win32.FindWindow("OpusApp", caption);
Win32.SetParent(Handle, hwnd);
int style = Win32.GetWindowLong(Handle, Win32.GWL_STYLE);
Win32.SetWindowLong(Handle, Win32.GWL_STYLE, style | Win32.WS_CHILD);
MaximizeBox = false;
MinimizeBox = false;
ControlBox = false;
ShowInTaskbar = false;
FormBorderStyle = FormBorderStyle.FixedToolWindow;
}
}

public class Win32
{
[DllImport("user32.dll", SetLastError = true)]
public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);

[DllImport("user32.dll", SetLastError = true)]
public static extern int GetWindowLong(IntPtr hWnd, int nIndex);

[DllImport("user32.dll", SetLastError = true)]
public static extern IntPtr SetParent(IntPtr hWndChild, IntPtr hWndNewParent);

[DllImport("user32.dll", SetLastError = true)]
public static extern int SetWindowLong(IntPtr hWnd, int nIndex, int dwNewLong);

public const int GWL_EXSTYLE = -20;
public const int WS_CHILD = 0x40000000;
}

////////// code ends //////////

Thnank you,
Alex.

 

[Alex]

Problem solved.

Here are the relevant parts of the code:

////////// code begins //////////

public class Connect : Object, Extensibility.IDTExtensibility2
{
public void OnConnection(object application, Extensibility.ext_ConnectMode connectMode, object addInInst, ref System.Array custom)
{
applicationObject = (Word.Application)application;
addInInstance = addInInst;
if (connectMode != Extensibility.ext_ConnectMode.ext_cm_Startup)
OnStartupComplete(ref custom);
}

public void OnDisconnection(Extensibility.ext_DisconnectMode disconnectMode, ref System.Array custom)
{
if (disconnectMode != Extensibility.ext_DisconnectMode.ext_dm_HostShutdown)
OnBeginShutdown(ref custom);
}

public void OnStartupComplete(ref System.Array custom)
{
applicationObject.CustomizationContext = applicationObject.ActiveDocument;
CommandBar commandBar = applicationObject.CommandBars.Add("My Command Bar", MsoBarPosition.msoBarTop, false, false);
CommandBarButton button = (CommandBarButton) commandBar.Controls.Add(MsoControlType.msoControlButton, missing, missing, missing, true);
button.Tag = "Launch Panel"; button.FaceId = 9528;
button.Click += new _CommandBarButtonEvents_ClickEventHandler(LaunchPanel);
commandBar.Visible = true;
applicationObject.ActiveDocument.Saved = true;
}

private void LaunchPanel(CommandBarButton button, ref bool cancel)
{
string caption = applicationObject.ActiveWindow.Caption + " - " + applicationObject.Caption;
Form1 form = new Form1(ref caption);
form.Show();
}

private Word.Application applicationObject;
private object addInInstance;
static object missing = System.Reflection.Missing.Value;
}

public class Form1 : System.Windows.Forms.Form
{
public Form1(ref string caption)
{
// Required for Windows Form Designer support
InitializeComponent();

MaximizeBox = false;
MinimizeBox = false;
ControlBox = false;
ShowInTaskbar = false;
FormBorderStyle = FormBorderStyle.FixedToolWindow;

IntPtr hwnd = Win32.FindWindow("OpusApp", caption);
if (hwnd == IntPtr.Zero)
Win32.ThrowLastError();

if (Win32.SetParent(Handle, hwnd) == IntPtr.Zero)
Win32.ThrowLastError();
}
}

public class Win32
{
public static void ThrowLastError()
{
Marshal.ThrowExceptionForHR(Marshal.GetHRForLastWin32Error());
}

[DllImport("user32.dll", SetLastError = true)]
public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);

[DllImport("user32.dll", SetLastError = true)]
public static extern IntPtr SetParent(IntPtr hWndChild, IntPtr hWndNewParent);
}

////////// code ends //////////

 

[Roberto Huezo]

Hello Alex,

but by using Word.Application you are binding to the Word version which is
referenced in your project...if it is Word 2003, will it work in a machine
with Word 2000 or Word XP?

Roberto

Problem solved.

Here are the relevant parts of the code:

////////// code begins //////////

public class Connect : Object, Extensibility.IDTExtensibility2
{
public void OnConnection(object application,
Extensibility.ext_ConnectMode connectMode, object addInInst, ref
System.Array custom)
{
applicationObject = (Word.Application)application;
addInInstance = addInInst;
if (connectMode != Extensibility.ext_ConnectMode.ext_cm_Startup)
OnStartupComplete(ref custom);
}

public void OnDisconnection(Extensibility.ext_DisconnectMode
disconnectMode, ref System.Array custom)
{
if (disconnectMode !=
Extensibility.ext_DisconnectMode.ext_dm_HostShutdown)
OnBeginShutdown(ref custom);
}

public void OnStartupComplete(ref System.Array custom)
{
applicationObject.CustomizationContext =
applicationObject.ActiveDocument;
CommandBar commandBar = applicationObject.CommandBars.Add("My
Command Bar", MsoBarPosition.msoBarTop, false, false);
CommandBarButton button = (CommandBarButton)
commandBar.Controls.Add(MsoControlType.msoControlButton, missing, missing,
missing, true);
button.Tag = "Launch Panel"; button.FaceId = 9528;
button.Click += new
_CommandBarButtonEvents_ClickEventHandler(LaunchPanel);
commandBar.Visible = true;
applicationObject.ActiveDocument.Saved = true;
}

private void LaunchPanel(CommandBarButton button, ref bool cancel)
{
string caption = applicationObject.ActiveWindow.Caption + " - "
+ applicationObject.Caption;
Form1 form = new Form1(ref caption);
form.Show();
}

private Word.Application applicationObject;
private object addInInstance;
static object missing = System.Reflection.Missing.Value;
}

public class Form1 : System.Windows.Forms.Form
{
public Form1(ref string caption)
{
// Required for Windows Form Designer support
InitializeComponent();

MaximizeBox = false;
MinimizeBox = false;
ControlBox = false;
ShowInTaskbar = false;
FormBorderStyle = FormBorderStyle.FixedToolWindow;

IntPtr hwnd = Win32.FindWindow("OpusApp", caption);
if (hwnd == IntPtr.Zero)
Win32.ThrowLastError();

if (Win32.SetParent(Handle, hwnd) == IntPtr.Zero)
Win32.ThrowLastError();
}
}

public class Win32
{
public static void ThrowLastError()
{
Marshal.ThrowExceptionForHR(Marshal.GetHRForLastWin32Error());
}

[DllImport("user32.dll", SetLastError = true)]
public static extern IntPtr FindWindow(string lpClassName, string
lpWindowName);

[DllImport("user32.dll", SetLastError = true)]
public static extern IntPtr SetParent(IntPtr hWndChild, IntPtr
hWndNewParent);
}

////////// code ends //////////

 

[Alex]

Hello Alex,

but by using Word.Application you are binding to the Word version which is
referenced in your project...if it is Word 2003, will it work in a machine
with Word 2000 or Word XP?

I have no idea.
I'm new at this...