PRB: Object Appears Larger During Visual Editing (104791)
The information in this article applies to:
- Microsoft OLE Libraries for Windows and Win32s 2.0
- Microsoft OLE Libraries, when used with:
- the operating system: Microsoft Windows NT 3.5
- the operating system: Microsoft Windows NT 3.51
- the operating system: Microsoft Windows 95
This article was previously published under Q104791 SYMPTOMS
An OLE 2.0 object appears larger during visual editing compared to the
loaded state.
CAUSE
The Windows application programming interface (API) LPtoDP is being
used to convert the size of the object from MM_HIMETRIC to MM_TEXT.
The object is then drawn with the MM_TEXT coordinates as the bounding
rectangle.
RESOLUTION
LPtoDP is dependent on the current mapping mode to perform a
conversion from logical points to device points. For a more accurate
transformation, a function must be written to "manually" convert the
units from MM_HIMETRIC to MM_TEXT by using GetDeviceCaps to get the
logical pixels per inch for use in the conversion. The OLE2UI library,
included with the OLE 2.0 toolkit, already includes several
transformation functions to properly convert the units:
|
XformWidthInPixelsToHimetric | Converts an int width into HiMetric units | XformWidthInHimetricToPixels | Converts an int width from HiMetric units | XformHeightInPixelsToHimetric | Converts an int height into HiMetric units | XformHeightInHimetricToPixels | Converts an int height from HiMetric units | XformRectInPixelsToHimetric | Converts a rect into HiMetric units | XformRectInHimetricToPixels | Converts a rect from HiMetric units | XformSizeInPixelsToHimetric | Converts a SIZEL into HiMetric units | XformSizeInHimetricToPixels | Converts a SIZEL from HiMetric units |
For more information on these functions, consult the "User Interface
Dialog Help" help file (OLE2UI.HLP) included with the OLE 2.0 toolkit.
| Modification Type: | Major | Last Reviewed: | 12/3/2003 |
|---|
| Keywords: | kbprb kbProgramming KB104791 kbAudDeveloper |
|---|
|