Stealing focus (for a good reason) - c++

I'm working on a clone of Yakuake and, if you have used it, you'd know that one of it's features is stealing the focus for easiness.
Basically, you hit the "show" hotkey, the app appears and you can write on it.
You could be doing whatever thing with whatever app, (being Yakuake hidden), but as soon as you hit the hotkey, Yakuake appears and steals the focus. I want to do the same with my app.
I know there are some window manager rules that prevent applications from doing this, but Yakuake is doing it, why I'm not able to do it?
Also, this application is meant to be compatible with Windows, Linux and Mac, so no KDE or Gnome or < insert_your_favourite_window_manager_here > hacks; I won't go the detect-WM-and-do-hack way.
PS: I'm doing that app in C++ and Qt4.
EDIT:
Just to make it clear, I'm not asking for any code (but if you actually have some example, I appreaciate it). I'm asking for a way for doing it. What should I do to make the WM assign the focus to my app. Is there any standard way for doing so?

There is the Qt::WindowStaysOnTopHint....

The solution is simpler than I thought. I did an animation with a duration of 0s and at the end of the animation I just did a focus. This did the work.

If you want to do it with a "show" hotkey or shortcut you'll have to create and use a hook on the keybord.
Qt don't provide such things so you'll have to do it by yourself.
you can have a look at this post : QT background process
I don't know for other OS.
When you'll get the right keyboard event from your hook, you can create a window with the "allwas on top hint" and that should by ok.

Related

Prevent a Windows app from stealing the focus

I have created a windows application in C++ and I want to make so whenever I run it, it doesn't steal focus from whichever window is currently focused(or maybe steal the focus and give it back right away). I'm not creating any window so i'm not sure how to change the window style, my program runs in the background.
I couldn't find any answer that worked for C++, is there any way I can do this?
When you start your application by clicking on the EXE or shortcut, Windows Explorer takes focus, not your app. The only way to start your app and not let Windows Explorer take focus is to start your program when Windows starts, via registry key.
Make sure you use the extended style WS_EX_NOACTIVATE when using CreateWindowEx().
See the Microsoft Docs for CreateWindowEx.

Retrieving Menu in Explorer

As the context menu for the desktop and explorer windows is disabled, I wanted to make a little something to bring back some functionality. My idea was to just list out things in a context menu (copy, paste, new, open with, etc) whenever a user right-clicks one of these windows, and then just simulate the appropriate event in the actual menu (file->new, edit->copy, etc). It wouldn't look perfectly pretty, but it would hopefully allow for the use of right-clicking.
The problem is that I cannot seem to get the actual menu. I opened My Documents and tried going down the child list towards SysListView32, calling GetMenuItemCount each time. Most returned -1, and the only other return value than that was 0.
How am I supposed to get a handle to the (file, edit, view...) menu?
If this isn't possible, is there a way I could simulate the user clicking something on the normal context menu, even if it's disabled?
Also, is there a way of making this work for the desktop? You can get the same type of thing if you view it in the explorer window, so I figured there might be a way.
I'm running Windows XP and any help is appreciated.
As per David Heffernan's comment,
As for your question, you are on the wrong track.
GetMenuItemCount needs an HMENU but you've been feeding it HWND.
That won't work. It also won't work from a different process.
You could possibly write a program that use the shell COM APIs
to show a context menu for a shell item. But your basic problem
is the bone-headed group policy. You really need to get that fixed.
Tell the IT guy that takes the decision that I said he was a fool
and was stopping you doing any useful work. ;-)
This led me onto the path of using the correct alternative method to achieve my goal.

Is it possible to embed a command prompt in a win32 app?

In linux and when installing packages etc. There are some installers that have a progress bar and a dos window which shows the files being extracted etc. How can i add this window to my C++ Win32 programs so that i can have it showing the tasks im doing? I cannot find any documentation on MSDN.
Question: How can i add a console window (if that's what its called, sure looks like one) in my program to show the details of the task at hand being done?
Here is a window with what i am asking.. (personal info so I erased the details. :]
You cannot embed a real console window inside another window (although a windowed process can have a separate console window). While it looks like a console window / command prompt, it is just a matter of appearances. What you want to do is create a sub-window/control with similar characteristics as a console window and then redirect the console output from the application(s) being run to append to that sub-window. For more information on how to do redirect the console output in Windows, see http://support.microsoft.com/kb/190351.
That "dos window" is a regular edit control: CreateWindow(ES_MULTILINE, EDIT, ...
However, it has the font set to a fixed-width one (Looks like courier). This is done by sending WM_SETFONT to the edit control.
#user995048 says "You cannot embed a real console window inside another window". But "cannot" is a strong word! I can run an entire virtualized computer in a window if I wish. :) So one can quite reasonably intuit that there are ways of doing what you say.
Sure, it is true that what you've seen are almost certainly cases of output redirection into a custom widget, designed to mimic the simple appearance of a terminal. However...if you want to embed one application's window inside another, there are things you can look into which might fit. Cooperative methods exist like GtkPlug, for instance:
http://developer.gnome.org/gtk/2.24/GtkPlug.html
To actually capture a not-designed-to-cooperate app's window and throw it in your app would be trickier. But possible, just as screen captures and virtual machines are possible. Probably best to avoid that sort of thing unless there's really a cause for it, though...
Try this
http://www.codeguru.com/cpp/misc/misc/article.php/c277/
link. I think the solution provided is what you need.
I tried it many years ago and it worked. I have not tried it in newer versions of windows though.

My application stealing focus

Im developing an application and use FlashWindowEx to flash the update window however it always manages to steal focus from full screen applications like games and such.
This is not what i want and is very annoying. Is there any way to work out whats causing it to steal focus (tried commenting out FlashWindowEx but it still did) or a way to tell it not to steal focus.
This happens on all versions of windows (including 7) and the game is launched seperatly to the application.
Check out the WS_EX_NOACTIVATE window style perhaps?

How do I have my apps dialog box pop up and take focus from the current running app?

I know this type of thing is looked negatively upon but I write software for people with disabilities and sometimes good gui practices don't make sense. In this case, the user interacts with a assistive interface and under certain conditions, my control app needs to prompt the user with a question. My background process creates a dialog (I'm using wxwidgets wxDialog class) and calls Show(). The dialog box appears but it does not have focus (the application that the user was previously using keeps it). Since my users can't use mice, they can't simply click on the window. I've tried calling show and then followed by SetFocus(HWND) but that doesn't do it. What's the problem? Is this even possible? Window7. I'm thinking that it might have something to do with it being a dialog and not a full window (wxFrame). Any help is greatly appreciated.
Try using SetWindowPos(hWnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOSIZE|SWP_NOMOVE)
Unfortunately, not only is it 'looked negatively upon', but it is not possible. There's no getting around this; ask yourself what would happen if every application could do this? Obviously, if you can put your dialog on top of the other application, it can do exactly the same back to you.
http://blogs.msdn.com/b/oldnewthing/archive/2010/11/25/10096329.aspx
The only think I can think of would be for you to put a notification icon in the system tray, and then have it display a notification balloon.
I had to do something like this before. Simply calling functions like SetForegroundWindow or SetWindowPos didn't do the trick.
I ended up using this ForceForegroundWindow function (1st one) and it works pretty well.
I know this is Delphi code, but the API is the same and Delphi is a pretty simple language.