ADD MFC controls to Fearture Design Tree TAB

Hello,

As the image shows.

I create a TAB in Fearture Design Tree use "CreateFeatureMgrView2",

then I want to draw the MFC controls in this TAB.

I use "GetFeatMgrViewWnd" to get the hwnd,

but the button couldn't create and has errors when it runs.(line 759, just error no error massage shows)

Thanks.

SolidworksApi/macros