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CTaskDialog::OnExpandButtonClick

The framework calls this method when the user clicks on the expansion button.

virtual HRESULT OnExpandButtonClicked(
   BOOL bExpanded
);

[in] bExpanded

A nonzero value indicates the extra information is displayed; 0 indicates the extra information is hidden.

The default implementation returns S_OK.

Override this method in a derived class to implement custom behavior.

Header: afxtaskdialog.h

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