hwnd

I am developing an add in for excel. At some point, I can receive async events. I need to be able to show the Excel window if hidden on these events. I am able to store the Hwnd property, which I believe must be an immutable int/reference to identify my Excel window. Can someone elaborate on this Hwnd ? and explain how I can show a hidden window from C# using it ? Thanks in advance folks ;) UPDATE : shortly, that was the piece of code that sorted my problems : /// <summary>Enumeration of the different ways of showing a window using /// ShowWindow</summary> private enum WindowShowStyle : uint {

Which parts of the communication with TWAIN can be put into another thread, e.g. a BackgroundWorker? Or: Is it possible to split the loop that handles the image transfer? Some scanner drivers scan all images before returning to the calling application which forces the application to handle all images at once. This results in e.g. OutOfMemoryException or weird behavior in my WPF application when suddenly all events (raised after every scanned image) have to be handled at once. Additionally the application hangs until the transfer was completed. I am using TwainDotNet: http://code.google.com/p

I suppose it is safe to say that WPF renders its contents as a window background. There are no child windows in a traditional HWND sense. So, when one introduces something HWND based in a WPF app, like a WebBrowser, things start to go wrong way it terms of visual appearance. Consider a Window having a Grid with two children, WebBrowser and something else, e.g. TextBox. If WebBrowser were a red circle instead, the TextBox would render on top of it. In case of WebBrowser, no TextBox is to be found anywhere. This is because TextBox is rendered as main window's background and WebBrowser is

i use to create a custom function like winexec(...):Hwnd that will retun the handle of executed application. i did use the findwindow() but having problem if it change window caption. There is no general way to get "the" window handle of an application because there's no guarantee that any program has one window handle. A program may have many top-level handles (i.e., Microsoft Word, one for each document), or it may have no windows at all. You might question what you really need the window handle for; there could be better ways of doing whatever it is you're trying to do that don't require

I am trying to get the active window's name as shown in the task manager app list (using c#). I had the same issue as described here . I tried to do as they described but I have issue while the focused application is the picture library I get exception. I also tried this , but nothing gives me the results I expect. For now I use: IntPtr handle = IntPtr.Zero; handle = GetForegroundWindow(); const int nChars = 256; StringBuilder Buff = new StringBuilder(nChars); if (GetWindowText(handle, Buff, nChars) > 0) { windowText = Buff.ToString(); } and delete what is not relevant based on a table I

My application is a vb6 executable, but some newer forms in the system are written in C#. I would like to be able to set the C# form's Owner property using a handle to the main application window, so that the dialogs remain on top when tabbing back and forth between my app and other apps. I can get the hwnd of the main application window. I'm not sure what I can do from there? UPDATE Oct 20 '08 at 17:06: Scott, Thanks for the response. I had overlooked that the Show/ShowDialog method parameter was not of type Form - I was looking only at the Owner property. I slightly modified the code I'm