How to identify currently active component

Question

1.00/5 (1 vote)

See more:

Hi All,
I want to identify currently active component to display incoming data through port. Currently active component is any component containing mouse pointer eg Window textbox, Web textbox, notepad, MS Word etc etc.
Thanks in advance.....

Posted 23-Jul-15 2:55am

Umesh AP

Add a Solution

Comments

Sergey Alexandrovich Kryukov 23-Jul-15 15:34pm

Define "containing mouse pointer".
—SA

1 solution

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)

CHill60 · Accepted Answer · 2015-07-23T03:14:00

Solution 1

By "currently active component" I take it you mean the current foreground application (The mousepointer can be over any application - it doesn't mean that the application has focus).

If so then try this solution[^]

Posted 23-Jul-15 3:14am

CHill60

Comments

Sergey Alexandrovich Kryukov 23-Jul-15 15:36pm

This is the answer to an invalid question, but with a good link. I would also add: there are different things like 1) active window, 2) foreground window, 3) control currently having a keyboard focus (no more than one per desktop), and it also have top-level (desktop child) window parent or is such a window itself...
—SA

Umesh AP 24-Jul-15 4:58am

Thanks CHill60 for the link.
Let me clear my concept about ‘currently active component’. Currently active component means any component which has focus, mouse pointer in it and having writable area eg Notepad, MS Word, TextBox etc etc. Basically I want to implement functionality like barcode reader. When barcode is scanned, it will display value in active component if it has writable area. If browser window is active & it doesn’t have writable area then it will display nothing.
Hope I have cleared all doubts.

Umesh AP 27-Jul-15 2:39am

Hi All, how to write data once i got handle to an currently active component? Pls give suggestions regarding this.

Umesh AP 29-Jul-15 6:49am

After searching a lot on net, the following link found useful for me.
http://www.codeproject.com/Articles/34752/Control-in-Focus-in-Other-Processes
And to display data added -
if (focusedControlHandle != IntPtr.Zero)
SendMessage(focusedControlHandle, WM_SETTEXT, 0, "This is the new Text!!! From C#");