I need to get change events for textbox created by API

Hello, I share with you this project of user control, where I have problems capturing the change event in a textbox initialized by API in any hwnd window (using a picturebox), I need this to quickly get out of the compatibility problems of characters such as Japanese, Korean, arabic, etc... and it works quite well without using "richtextbox".

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Currently what I want is to obtain the change event simply following the same implementation by API, I am obtaining the return of the event through a timer that compares changes, but I feel that it is not the most optimal.

I leave you the files, thanks for your help!!.

Attachment 192332

Thank you so much!

You need to subclass the parent window, and catch the WM_COMMAND message, then look for EM_CHANGE notification (HIWORD(wParam)).

You can take a look at my Unicode RichTextBox project. I also implemented it in a PictureBox and you can see how to subclass it and intercept the "EN_CHANGE" notification like Dry Bone said.