• 0

[C#] How do I create some hotkeys inside my app?


Question

I do not want to create global hotkeys that work in the whole system. I have this note taking app which uses a TextBox to display the note (from a text file) and for now, I want only 2 internal shortcuts.

Ctrl + A: To select the whole text in the TextBox

Ctrl + S: To automatically save the note to the text file

I only want both hotkeys to work if the TextBox control has focus...

Any help is appreciated.

12 answers to this question

Recommended Posts

  • 0
  Betaz said:

That looks interesting, I'll take a better look at that some other time cause it's running late, very late...

I'll leave a reply here, if I, for some reason, have a problem with the above article.

  • 0

I took a look at the example, at it seems as though it should work fine. If you don't need to have many keyboard shortcuts though, you could likely shorten it to something simpler. The following is an example:

protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
{
	switch (keyData)
	{
		case Keys.Control|Keys.S:
			MessageBox.Show("control
			return true;
		case Keys.Control|Keys.A:
			MessageBox.Show("control
			return true;
	}
	return false;
}

  • 0
  cowwithoutbrain said:
I took a look at the example, at it seems as though it should work fine. If you don't need to have many keyboard shortcuts though, you could likely shorten it to something simpler. The following is an example:

protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
 {
	 switch (keyData)
	 {
		 case Keys.Control|Keys.S:
			 MessageBox.Show("control
			 return true;
		 case Keys.Control|Keys.A:
			 MessageBox.Show("control
			 return true;
	 }
	 return false;
 }

That's very true, and that may be a better solution for the case. I didn't go particularly in depth in choosing the article, just found one that explained accelerators well enough. You can always process directing in the ProcessCmdKey override just as easily.

  • 0
  Nazgulled said:
So, what's the point on having all that extra code? Is it just to organize the code and the keys better? For now, I have these 2 shortcuts, in the future, I can have more, I don't know...

The example is given to explain all the different parts. It's broken up into each piece for organization, but even more so to break it into pieces to teach with the article. As with just about anything in coding, you can expand anything ridiculously, or you can compress it to almost nothing. It just depends on how you feel comfortable with your code.

This topic is now closed to further replies.
  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Posts

    • Looking for a specific setting in Settings? Sorry, the option just doesn’t exist as you’d need to elevate for that. Want to do something quickly and efficiently? Nah, forced to use a “modern” interface which takes far longer to achieve what you’re looking to do. (Example: disable a NIC)
    • Yet the best laptop for all day battery life is a Mac, hands down, no contest. Windows is bloated and power management is rubbish. Search indexer. Defender. Malicious Software Removal Tool. Windows Update (+DISM). Office CTR. Telemetry. Disclaimer: I own a surface laptop studio, multiple gaming desktops, server, and a macbook pro.
    • And bring back taskbar deskbands which were removed, and full and total customization of notification area icons like earlier
    • This has all the markings of a thinly veiled mechanism for force users of older versions of Windows to upgrade...and trash perfectly good hardware. Microsoft, your history easily supports this line of reasoning.
    • Plasma 6.5 brings improved Emoji Selector, better performance in Activity manager, and more by David Uzondu This week saw the long-awaited release of KDE Plasma 6.4, bringing better window management and a whole lot of color management features. Apart from the release of 6.4, the KDE team was able to get other work done, and this was all outlined in the latest issue of This Week in Plasma, which details what is coming down the pipe for future versions. Looking ahead to Plasma 6.5, the developers are making some notable changes to improve performance and general usability. To prevent its database from growing endlessly and causing performance problems over time, the Activity Manager service will now only store the last four months of your history by default. The Emoji selector app is also getting a much-needed redesign that makes the window more compact and moves the sidebar button to the header for a cleaner look. Other little details for 6.5 are being polished up too. The unpopular vertical line separating the date and time on the horizontal Digital Clock widget is gone; if you want it back, you can add it yourself with a custom date format. The "Add New" button has also been moved to the top toolbar in the Shortcuts page within Settings, freeing up some valuable screen real estate. The devs also reduced the minimum size of custom tiling tiles, a small but significant fix for anyone with an ultrawide monitor. In addition to that, the Networks widget's captive portal banner now uses inline header styling, so it doesn't look like a bunch of frames stacked inside each other anymore. Of course, before we get to 6.5, the current release needs some attention. Plasma 6.4's first bug fix release, 6.4.1, addresses issues like broken item selection in the Folder View widget and a bug that could cause the system to lock or suspend faster than intended. Keyboard navigation in list views in Discover feels smoother now, and text is easier to read in certain list items in KRunner. The devs also cleaned up how list items look when you press or click them in Discover. 6.4.1 also fixes a bug where the clipboard history popup would fail to select the top item, and makes the Earth Science Picture of The Day wallpaper plugin work again after its data source changed. Here's the full list of fixes: Fixed several issues in the Folder View widget that caused selecting or opening items to not work when using certain non-default view settings, when the view was scrollable, or when using a touchscreen. Fixed a bug in the Meta+V clipboard popup that sometimes failed to pre-select the top-most item. The Clipboard settings window’s shortcuts page no longer shows columns for local shortcuts that don’t do anything, since the clipboard is global in scope. Fixed the Earth Science Picture of the Day wallpaper plugin after the source data changed formatting again. Made a few fixes to the “Missing Backends” section of Discover’s settings window that kept it from working properly. Fixed a bug that prevented direct scan-out (and its performance benefits) from activating on rotated screens. Fixed an issue where the system could lock or suspend sooner than expected after an app stopped blocking those actions. Installing a new wallpaper plugin no longer causes the plugin list combobox to appear blank. The team even went back to squash some bugs in the older 6.3.6, tackling an issue that could cause keyboard shortcuts to get lost during a system upgrade and fixing an overflow bug with KRunner's faded completion text. Plasma 6.4.1 is set to arrive on June 24th, with 6.3.6 following on July 8th.
  • Recent Achievements

    • One Month Later
      adxnksd42031 earned a badge
      One Month Later
    • Rising Star
      aphanic went up a rank
      Rising Star
    • Contributor
      GravityDead went up a rank
      Contributor
    • Week One Done
      BlakeBringer earned a badge
      Week One Done
    • Week One Done
      Helen Shafer earned a badge
      Week One Done
  • Popular Contributors

    1. 1
      +primortal
      664
    2. 2
      ATLien_0
      262
    3. 3
      Michael Scrip
      234
    4. 4
      Steven P.
      162
    5. 5
      +FloatingFatMan
      151
  • Tell a friend

    Love Neowin? Tell a friend!