CMFCPropertyGridProperty::OnDrawExpandBox
Called by the framework to draw an expand box control near a property that contains sub-properties.
virtual void OnDrawExpandBox(
CDC* pDC,
CRect rectExpand
);
Parameters
[in] pDC
A pointer to a device context.[in] rectExpand
A bounding rectangle that specifies where to draw the expand box control.
Requirements
Header: afxpropertygridctrl.h
Remarks
Click the expand box control to expand or collapse a list of sub-properties. The expand box control is designated by a square that contains a plus () or minus (-) sign. A plus sign indicates that the property can be expanded to show a list of sub-properties. A minus sign indicates that the list can be collapsed to show only the property.