# Windows functions are not working in editor mode but working when debugging?

**URL:** <https://forums.unrealengine.com/t/windows-functions-are-not-working-in-editor-mode-but-working-when-debugging/434154>\
**Category:** Debugging, Optimization, & Profiling\
**Tags:** unreal-engine, UE4, CPP, question, function-signature\
**Created:** [September 20, 2018, 3:12pm UTC](https://forums.unrealengine.com/t/windows-functions-are-not-working-in-editor-mode-but-working-when-debugging/434154 "2018-09-20T15:12:07Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Maverick\_tango](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Maverick\_tango](https://forums.unrealengine.com/u/Maverick_tango)\
**Post date:** [September 20, 2018, 3:12pm UTC](https://forums.unrealengine.com/t/windows-functions-are-not-working-in-editor-mode-but-working-when-debugging/434154/1 "2018-09-20T15:12:07Z")

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I have open file dialog function in “PostActorCreated()” method i.e when i drag n drop .cpp file from contain browser to editor it should open dialog box.

Now while i open project in VS and run though “Local windows debugger” then this functionality works fine, but when i don’t run the project using debugger(i.e using .uproject file only) then it is not opening the dialog box ??? nothing happens.

What to do so that i can have this functionality working with debugging ??

Thanks

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<div class="post-metadata">

**Author:** ![Maverick\_tango](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Maverick\_tango](https://forums.unrealengine.com/u/Maverick_tango)\
**Post date:** [January 9, 2019, 8:46am UTC](https://forums.unrealengine.com/t/windows-functions-are-not-working-in-editor-mode-but-working-when-debugging/434154/2 "2019-01-09T08:46:44Z")

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In release version of unreal , 3rd party files are not given , So i need to run it from source