Converting Between OLE_COLOR and COLORREF TypesLast reviewed: October 12, 1995Article ID: Q131101 |
The information in this article applies to:
SUMMARYThis article shows by example how to use the COleControl::TranslateColor() method can be used to convert an OLE_COLOR value into a COLORREF value by using the cast operator.
MORE INFORMATIONThe main difference between an OLE_COLOR and a COLORREF is that if an OLE_COLOR has its high-order bit set, the low-order byte is treated as a system color index. The function OleTranslateColor(), which is called by COleControl::TranslateColor(), translates the system color index into a COLORREF when this condition is detected. The following code illustrates conversion between an OLE_COLOR and a COLORREF:
void CMyOleControl::ConversionTest() { OLE_COLOR ocBack = GetBackColor(); // Convert OLE_COLOR to COLORREF COLORREF clrBack = TranslateColor(ocBack); // Convert COLORREF to OLE_COLOR OLE_COLOR ocConverted = (OLE_COLOR)clrBack; } REFERENCESFor a complete list of the translations performed by OleTranslateColor(), or for more information about the OLE_COLOR type, please see the "Microsoft OLE Control Developer's Kit User's Guide and Reference," Appendix D: OLE Controls Architecture, under the heading "Standard Color Type."
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Additional reference words: kbinf 1.00 1.10
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