Resolved issue in sending WM_DESTROY msg to ActiveX controls #1
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Fixes dotnet#12551
Proposed changes
DetachWindowmethod always setsIsHandleCreatedto false. This causes the if condition to always be false, preventing the WM_DESTROY message from being sent to ActiveX controls. To fix this, we now store the value ofIsHandleCreatedin a boolean variable before calling theDetachWindowmethod. This was the previous behavior but got disrupted due to this change.