Detect changes in user locale setting (Control Panel -> Clock,Language and Region) in child dialog box

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I have dialog box made in resource editor that behaves as a child control of the main window.

In normal mode, when behaving as a popup, dialog can receive WM_SETTINGCHANGE[^] message that notifies dialog box about user changing locale settings, but as a child it does not seem to receive this message -> after setting up a breakpoint at relevant code, the debugger never reaches those lines.

Is there a way to detect in child dialog box when user changes locale in Control Panel?

Posted 2-Feb-15 12:25pm

AlwaysLearningNewStuff

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barneyman 2-Feb-15 19:39pm

it only goes to the top window, you'll have to have an internal mechanism to broadcast it to your child windows - just enum your child windows and repeat the message if you don't want to have children register for it

Jochen Arndt 3-Feb-15 3:07am

This would be an answer.
When the dialog box is created by the main window, the handle can be stored there to forward the message (or a user defined one) to the dialog box. This avoids enumeration.

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KarstenK · Accepted Answer · 2015-02-11T03:32:00

Solution 1

You must forward the message in your app. Post it with the same parameters to your actual window and handle it in a message handler.

Posted 11-Feb-15 3:32am

KarstenK

Comments

AlwaysLearningNewStuff 11-Feb-15 10:39am

Exactly what I did. Hoped to bypass this approach but it seems there is no other way...