is it possible to get the handle of a specific component in an unknown number of window opened by the same program?
The program foo.exe contains a button that, when clicked, opens a form containing a Label and an Image ( with no upper bound on the number of forms opened). Is possible to get all the handle of the Label component of every window openend, given the process name "foo" ?
with EnumWindows or FindWindow you can find the application window depending if you already know the title or the process name or so on, you can even use FindWindowLike if you really do not much of it.
Once in one way or another you know the windows handle of your window, with GetDlgItem you can get info about your child controls.
Related
I'm trying to get the window handle (HWND) of the main form of my C# application (the application has only 1 form).
Some solutions on the internet show that I can use:
Process.GetCurrentProcess().MainWindowHandle
to get the window handle of current process of my application. But this value is always zero, anything wrong?
MSDN says:
The main window is the window opened by the process that currently has the focus (the TopLevel form). You must use the Refresh method to refresh the Process object to get the current main window handle if it has changed.
and
A process has a main window associated with it only if the process has a graphical interface. If the associated process does not have a main window, the MainWindowHandle value is zero. The value is also zero for processes that have been hidden, that is, processes that are not visible in the taskbar. This can be the case for processes that appear as icons in the notification area, at the far right of the taskbar.
See http://msdn.microsoft.com/en-us/library/system.diagnostics.process.mainwindowhandle(v=vs.110).aspx
In properties [F4] window 'Show in Taskbar' should be True
try using
System.Diagnostics.Process.GetCurrentProcess().MainWindowHandle
I haven't been able to find an example containing this functionality, and either i missed it in the documentation or it's not there.
I have a fullscreen GUI program, and when a user is required to type in a number, a calculator window popup has to appear in the center of the screen. The user types a number and clicks on enter, or hits cancel to continue past the window.
The problem is clicking on the fullscreen window behind the calculator brings that window to the front and hides the calculator without the intended entry being completed, which could get annoying for the user.
I guess the functionality I'm trying to create is what happens in most text editors/IDE's when you press the Open File button. Let me know if you want to see code, it's just two separate Window classes at the moment.
The Present() function of the Window object brings that particular window to the front. So adding a FocusOutEvent listener on the window you wish to keep in front like:
windowObj.FocusOutEvent += (obj, args) => windowObj.Present();
will work.
The alternative to this (and the better way) is to set the Modal property of the window to true.
If you've stumbled across this and you were looking for a popup window that suspends whatever called it to wait for input, see this question:
gtk# thread for window
You basically use the Dialog class instead of Window and add your elements to the ActionArea of the Dialog.
Hope this helps.
I have created application and I also have another application which I have no source code of, another application has dialog box with the label which displays progress status of the current job in percentages, it looks like this:
What I am trying to achieve is to capture status of this label, and keep updating label which I had created within my own application.
As far as I understand I have to use WM_GETTEXT or WM_COPY functions, but I do not even know where to start, by the way I know how to use FindWindow function.
So far I have managed utilising spy++ to capture information about the main window:
Handle:0020040A
Caption: Import
Class: TfrmProgress
And also I could get a class and handle of the window within the main window, highlighted below:
The class and handle are:
Handle: 00080610
Class: Tpanel
Additional
I have also managed to retrieve handle and class of progress bar:
Handle: 00090400
Class: TProgressBar
Question
How can I reflect status of the label from this dialog box onto the label within my application or reflect the progress bar?
Reason
I am trying to achieve this because this dialog box is not available all the time e.i. it only appears sometimes and it took me a long time trying to capture it. But I want to see the progress of the given to the application task.
Thank you and any help would be welcome.
So it's definetely a weird question. When a window is on the background, it has no focus. But when you click on it, it get it and the "keyboard cursor" is placed in a specific place. For example, if you are using Skype, the keyboard cursor will be inside the textbox of the active conversation. In Skype, the textbox has its specific handle.
So the question is: How to know which window handle will be focused when you click on the main (parent) window title?
Regards
EDIT1:
I found a workaround for my case: I want to register inside a variable, each handle code of the last window of each main window. For example, I have 3 opened windows, the one with arrow is focused:
1.)
->Window 1
->Child window1
-Child window2
-Window 2
-Window 3
2.) I select another window, so the handle number of the child window that lost focus is saved inside a variable
-Window 1
-Child window1
-Child window2
->Window 2
-Window 3
=> HANDLE OF Child window1 is saved inside a variable
Using this, I could know the last used window's handle of each application! Is there any way to generate an event each time the user change the focused window handle? Or do I need to set a timer, that is not really clever to my mind?
Regards
i want to get the handle of the textbox where the caret is in, in another program. all i can find is how to get the list of the controls in a window with "EnumChildWindows", and then to search for "edit" control.. (and it doesn't work for all the program that have textbox).
i have no idea how to find the one that the caret is in and the user is writing in.
i really got stuck with it.. :(
thanx alot,
Shiran.
You'll need to jump through several pinvoke hoops. Start with GetForegroundWindow() to get the handle of the active toplevel window. Then GetThreadWindowProcessId() to obtain the ID of the thread that owns that window. Then finally GetGUIThreadInfo(), it returns a bunch of into about the windows owned by the thread. The GUITHREADINFO.hwndCaret member gives you the handle to the window that owns the caret. It doesn't have to be a text box btw.
Visit pinvoke.net for the declarations you'll need.