I am working on the VSTO excel 2007 workbook application & looking for an event which tracks the click on excel application.
There are 2 scenarios:-
I have tried
ThisWorkbook_ActivateEvent();
and
this.Application.WindowActivate
but they doesn't seem to be working.
this is a complete VSTO solution which should work, although it's not very nice, because it's using a timer. I've tested it with both of your scenarios.
Jörg
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml.Linq;
using Excel = Microsoft.Office.Interop.Excel;
using Office = Microsoft.Office.Core;
using Microsoft.Office.Tools.Excel;
using System.Runtime.InteropServices;
using System.Windows.Forms;
using System.Diagnostics;
namespace ExcelAddIn_TestExcelWindowActivation
{
public partial class ThisAddIn
{
[DllImport("user32.dll", EntryPoint = "GetForegroundWindow")]
public static extern IntPtr GetForegroundWindow();
private IntPtr _excelWindowHandle = IntPtr.Zero;
private IntPtr _lastForegroundWindowHandle = IntPtr.Zero;
private Timer _timerForegroundWindowObserver = null;
private void InternalStartup()
{
this.Startup += new System.EventHandler(ThisAddIn_Startup);
this.Shutdown += new System.EventHandler(ThisAddIn_Shutdown);
}
private void ThisAddIn_Startup(object sender, System.EventArgs e)
{
//Get excel handle
_excelWindowHandle = new IntPtr(Globals.ThisAddIn.Application.Hwnd);
//Initialize and start the timer
_timerForegroundWindowObserver = new Timer();
_timerForegroundWindowObserver.Interval = 1000; //ms
_timerForegroundWindowObserver.Tick +=new EventHandler(_timerForegroundWindowObserver_Tick);
_timerForegroundWindowObserver.Start();
Debug.Print("ThisAddIn_Startup completed.");
}
private void ThisAddIn_Shutdown(object sender, System.EventArgs e)
{
//Stop and delete the timer
_timerForegroundWindowObserver.Stop();
_timerForegroundWindowObserver = null;
}
private void _timerForegroundWindowObserver_Tick(object sender, EventArgs e)
{
var foregroundWindowHandle = GetForegroundWindow();
//Remember the last foreground window and exit if there were no changes...
if (foregroundWindowHandle == _lastForegroundWindowHandle) return;
_lastForegroundWindowHandle = foregroundWindowHandle;
//When Excel is activated: Give info...
if (foregroundWindowHandle == _excelWindowHandle)
{
Debug.Print("Excel window is activated yet.");
}
}
}
}
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