C#

Matglas wrote:

I can not get it to work.

[ToolboxData("<{0}:ExceptionViewer runat=server />")]
[DesignTimeVisible(true)]
public class ExceptionViewerControl : WebControl
{
    protected override void RenderContents(HtmlTextWriter output)
    {
        this.EnsureChildControls();
        this.RenderChildren(output);
    }
    protected override void OnInit(EventArgs e)
    {
    }
    protected override void CreateChildControls()
    {
        this.Controls.Clear();
        HtmlTable RenderTbl = LoadLogDirectory();

        this.Controls.Add(RenderTbl);
    }

    private const string mainTblId = "exViewerTbl";
    private String fileLoad = null;

    private HtmlTable _mainFileTable = new HtmlTable();
    private HtmlTable MainFileTable
    {
        get { return _mainFileTable; }
        set { _mainFileTable = value; }
    }

    private HtmlTable LoadLogDirectory(FileInfo file)
    {
        this.MainFileTable = new HtmlTable();

        LinkButton viewLogLButton = new LinkButton();
        viewLogLButton.CommandName = "ViewLogFile";
        viewLogLButton.CommandArgument = file.Name;
        viewLogLButton.Text = file.Name;
        viewLogLButton.Click += new EventHandler(viewLogLButton_Click);

        ControlCollection controls = new ControlCollection(this);
        controls.Add(viewLogLButton);

        if (fileLoad == file.Name) {
           //action
        }

        this.MainFileTable.Rows.Add(GetHeaderRow(controls));
        return MainFileTable;
    }

    void viewLogLButton_Click(object sender, EventArgs e)
    {
        fileLoad = ((LinkButton)sender).CommandArgument;
    }

    private HtmlTableRow GetHeaderRow(ControlCollection controls)
    {
        //header cell
        HtmlTableCell headerCell = new HtmlTableCell();
        headerCell.Attributes["class"] = styleClass;
        headerCell.Attributes["colspan"] = span.ToString();
        foreach (Control ctrl in controls)
        {
            headerCell.Controls.Add(ctrl);
        }
        headerRow.Cells.Add(headerCell);

        return headerRow;
    }
}

using System.Runtime.InteropServices;
 
private const int BN_CLICKED = 245;
  
[DllImport("User32.dll")]
public static extern Int32 FindWindow(String lpClassName,String lpWindowName);
 
[DllImport("user32.dll", SetLastError = true)]
public static extern IntPtr FindWindowEx(IntPtr parentHandle, IntPtr childAfter, string className,  string  windowTitle);
 
[DllImport("user32.dll", CharSet=CharSet.Auto)]
public static extern int SendMessage(int hWnd, int msg, int wParam, IntPtr lParam);

//in your code ...
 
int hwnd=0;
IntPtr hwndChild=IntPtr.Zero;

//Get a handle for the window
hwnd=FindWindow(null,"XXX"); //set the name
if(hwnd != 0)
{
	//Get a handle for the "OK" button
	hwndChild = FindWindowEx((IntPtr)hwnd,IntPtr.Zero,"Button","OK");
        // Wait
	Thread.Sleep(1000);
        //send BN_CLICKED message
	SendMessage((int)hwndChild,BN_CLICKED,0,IntPtr.Zero);
}

Jefis wrote:

possible to write only in managed code?

Mark T. wrote:

Hi Martin, 27 Feb 2007

First, thanks for posting sample code. I have needed to do this same sort of thing in the past, and would like to learn how. (Pressing a button on a running program, or inserting text, or...)

I wrote a test program with a couple buttons on it, and then I tried your sample code. It successfully identified the other program's window (non-zero pointer), but could not find the button.

This call:
hwndChild = FindWindowEx((IntPtr)hwnd,IntPtr.Zero,"Button","A");
returned zero.

1. Any idea what may have gone wrong with this particular case.
2. Where can I learn more about this? For instance, I don't know where you found the value for BN_CLICKED = 245. I searched online and came up blank.


Thanks for any help.
Mark

Mark T. wrote:

1. Any idea what may have gone wrong with this particular case.

Mark T. wrote:

2. Where can I learn more about this?

ChForm frm = new ChForm();<br />
frm.MdiParent = this;<br />
frm.Show();