I have built an application which listens for a global hot key (Alt + Space currently), when I press the hot key when Google Chrome is in focus it brings my app to focus but also opens Chrome's context menu (right click menu). I used the following dll for implementing the keyboard hook.
Can I prevent this from happening? If so how? This isn't a major problem but if there is a way in which you can clear all existing hot keys tied to that combination then I'd like to learn this.
EDIT
The answer that I selected as being the correct one, is the correct one but for my problem. To correctly implement this feature into a C# WinForm i used this tutorial which was very helpful: http://www.dreamincode.net/forums/topic/180436-global-hotkeys/
The FAQ section of the linked article contains your answer:
Question
I need to suppress some keystrokes after I have processed them.
Answer
Just set the e.Handled property to true in the key events you have
processed. It prevents the keystrokes being processed by other
applications.
Related
I want to capture the PrintScreen button even if the application is minimised or not on focus at all. I've seen some snippets but none of these worked in WPF, only in Winforms. Anyone can give some code to start?
Please refer to the following blog post for an example of how you could implement global hot keys in a WPF application.
Implementing global hot keys in WPF: https://blog.magnusmontin.net/2015/03/31/implementing-global-hot-keys-in-wpf/.
A global, or system-wide, hot key is a key or a combination of keys that is associated with a particular window, which will receive messages whenever the user presses this key or key combination from anywhere in the system.
There are indeed no .NET API:s to register hot keys for your application but there is a native RegisterHotKey method that you can call from managed code using P/Invoke. Please refer to the link for more information.
What you want is called "Global Keyboard Hooks"
there is a pretty good solution here: http://www.codeproject.com/KB/cs/globalhook.aspx
trying to write a program to flag a Key_up or Key_down event throughout the system, but I'm having a hard time with the implementation. I've seen a few posts on here that link to outdated articles on Global Hooks, but they are usually so old I cant get source code working, or theres really no explination of how it works.
I'm looking for some sort of implementation that's relitively simple (ie a library or DLL I can use, or if it's implemented by Visual Studio 2010 somewhere) as opposed to having several classes and files devoted to making a global hook.
The use of my code: I essentially want to extend the CTRL+C function to detect if CTRL is pressed, and if C and 1 are pressed (CTRL+C+1) I copy, but also store the copied text onto a notepad document.
So with that in mind it seems really extensive to design all this code only to hook onto the KeyDown/KeyUp that will be used for only 1 key
if this question has been answered recently please link me and I can close/edit this to not be redundant
OK, so almost immediately after posting this I found the sollution by re-wording my search :/ sorry to be 'that guy' everyone. BUT in the spirite of helpfulness here is a link to a SUPER quick way to get global hotkeys in your application:
http://www.dreamincode.net/forums/topic/180436-global-hotkeys/
this works for both creating new hotkeys and overriding old ones
I need some shortcut keys in my WPF application. I found this post.
However this link seems to be about application/window level in WPF. For example, the shortcut key is only working in a specific window.
However, what I need is for system&global level. For example, the application is launched but it has been minimized. When my mouse is focused on some other placed in desktop, I click "ctrl+alt+a", then the application will be maximized(or any other operations will be down in the application).
How could I implement such system-level shortcut keys?
#XAMLLOver gives me the correct solution.
Others who needs the global short cut key could check the article below.
Solution for system-level short cut key
I have a project that runs in the background in a different process, I want it to be able to react to keyboard everywhere, for example I run the project, and afterwards I do other stuff in the computer such as browsing, facebook, watching movies etc.., and every time I press F9 I want my project to show up. Same as how you press a combination of keys to invoke Babylon... I want to implement it in C#, I have no idea how to begin.
You can register a hotkey with the RegisterHotKey API function. You can see an example of its usage from C# here.
I think you need to write a system-wide keyboard hook, check here for details:
https://stackoverflow.com/a/1764434/559144
How do I grab events for all applications? An example system-wide hook.
I'm creating a utility for my mother-in-law in order to remap CTRL-C and CTRL-V commands to one signal button on her keyboard to assist with at home work. On the first press it will commit a COPY command. Next press will be a PASTE command. Since my little application won't be in focus I'll need the use of GetAsyncKeyState. Right now I'm attempting to map this all to the tilde key. How do I kill the tilde key from actually passing to the field selected and overwriting the data or appending itself to the pasted text? Could either use C# in any .NET framework or VB6 for this little applet.
I understand the answer I'm looking for could assist in creating malicious software so if anyone should feel the need to not share or delete this question then by all means do so. I'm looking for an answer to a real issue or situation. I know I could map to a none typing key like Scroll Lock or Caps Lock like some other utilities out there but both of these keys are used at this point in time and not quite an option.
You going to have to do a global keyboard hook (see VBAccelerator for some details on global hooks in VB6), and then not pass on the message once you have received CTRL-V or CTRL-C and then act on that.