[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] Reference for unit 'InterfaceBase' (#lcl)

TWidgetSet.SetMapMode

Sets the mapping mode of an device context.

Declaration

Source position: winapih.inc line 248

public function TWidgetSet.SetMapMode(

  DC: HDC;

  fnMapMode: Integer

):Integer; virtual;

Arguments

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

TWidgetSet.GetMapMode

  

Returns the mapping mode of a device context.
Version 4.0 Generated 2025-05-03 Home