TWidgetSet.SetMapMode function
Sets the mapping mode of an device context.
Declaration
function SetMapMode(DC: HDC; fnMapMode: Integer): Integer; virtualArguments
DC | The device context. |
fnMapMode | The new mapping mode. |
Function result
The old mapping mode.
Description
The mapping mode specifies the correspondence between logical and physical units. Supported modes are:
- MM_ANISOTROPIC
- Arbitrary mapping
- MM_HIENGLISH
- 0.001 inch
- MM_HIMETRIC
- 0.01 mm
- MM_ISOTROPIC
- Arbitrary mapping, same for X and Y axis
- MM_LOENGLISH
- 0.01 inch
- MM_LOMETRIC
- 0.1 mm
- MM_TEXT
- 1 device pixel
- MM_TWIPS
- 1/20th point (twip, 1/1440 inch)
Positive X is right, except for (an)isotropic mappings. Positive Y is up, except for (an)isotropic and MM_TEXT mappings.
See also
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.