RAD Studio VCL Reference
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TMetafile.MMHeight Property

Contains the height of the metafile image in 0.01 millimeter units, the native scale used by enhanced metafiles.

Pascal
property MMHeight: Integer;
C++
__property int MMHeight;

MMHeight is used for a more accurate reading of the vertical size of the graphic. The Height property, by contrast, is always in screen device pixel units; to avoid loss of precision in converting between device pixels and millimeters, set or read the dimensions in millimeters with MMHeight. 

 

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