How can I detect whether control key is pressed in mouse up event

Question

4.00/5 (1 vote)

See more:

I tried to detect key event in mouse up event in text box. Currently I declare public boolean variable that detect whether control key is pressd or not which is further set true or false in key down event and key up event of that text box.At the same time, in mouse up event ,I have to get the control-key-pressing condition via that public variable. It's working but I feel it is not traditional and not totally smart.( I will have to add more variable when I want to detect further keys like (Shift, Alt)). Is there any way to detect key currently pressing during mouse event.

Posted 30-Apr-11 0:46am

whitehaker

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Ed Nutting · Accepted Answer · 2011-04-30T00:50:00

Solution 1

Unfortunately at the moment there isn't. I ran into the same issue a few weeks ago and ended up doing exactly what you have done. The only solution is to import methods from the User32.dll but I always find imports a little messy however, if you wish to a good example seems to be here:
http://www.java2s.com/Code/CSharp/Event/GetAsyncKeyState.htm[^]

alternatively for a more in depth explaination/example here:
http://www.switchonthecode.com/tutorials/winforms-accessing-mouse-and-keyboard-state[^]

Posted 30-Apr-11 0:50am

Ed Nutting

Updated 30-Apr-11 0:52am

v2

Comments

NuttingCDEF 30-Apr-11 8:18am

See possible alternative solution using Control.ModifierKeys.

Ed Nutting 30-Apr-11 8:24am

Yes that seems to work, though it will only tell you if one of the modifier keys is pressed which causes and issue if whitehacker wants to capture other modifier keys simultaneously.

Sandeep Mewara 30-Apr-11 12:32pm

My 5!

Nish Nishant 30-Apr-11 12:36pm

Good answer, my vote of 5!

NuttingCDEF · Accepted Answer · 2011-04-30T02:18:00

Solution 2

Not tried it personally, but see http://msdn.microsoft.com/en-us/library/system.windows.forms.control.modifierkeys.aspx[^] for Control.ModifierKeys property that may well give you what you want.

Posted 30-Apr-11 2:18am

NuttingCDEF

Comments

Ed Nutting 30-Apr-11 8:25am

My 5. See my other comment.

Sandeep Mewara 30-Apr-11 12:32pm

My 5!

Nish Nishant 30-Apr-11 12:36pm

Good answer, my vote of 5!