Handle To Control c# win32

Question

0.00/5 (No votes)

See more:

Hi

I am working on a project in which I am trying to get the handle of a control in another application. However I don't understand too well the System.Windows.Forms.Control.FromChildHandle(handle) function. What I'm doing is getting the handle of the main form and want to get all the childhandles into controls.

I have been looking online for examples but haven't found any and the msdn doesn't provide examples.

My code actually compiles, but the System.Windows.Forms.Control.FromChildHandle function does not return a control.

thank you

Posted 25-Aug-11 10:33am

nanomass

Updated 25-Aug-11 10:35am

Simon Bang Terkildsen

Add a Solution

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)

Simon Bang Terkildsen · Accepted Answer · 2011-08-25T10:51:00

Control.FromChildHandle Method - MSDN entry[^]
According to the documentation Control.FromChildHandle walks up the parent chain and returns the control with the given handle, null if not found.

I am trying to get the handle of a control in another application
you have to look into
EnumWindows[^]
FindWindow[^]
FindWindowEx[^]
Or
UIAutomation[^]

In short you won't be able to get a Form and any kind of Control object which represents a form/control in another application. Thus Control.FromChildHandle returns null when you give it a handle that doesn't belong to the current application.