visual c++ - How to change the size of activex control automatically? -

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i wrote activex control showing images in richedit.what want control's size changes image in changes, control's size seems fixed, i've no idea how it.is there way reach that?

change size of activex control's window setwindowpos call ioleinplacesite::onposrectchange on site object.

[edited] apparently, perform above upon en_requestresize notification richedit. en_objectpositions looks relevant. try both , share result us.


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