This enum contains compatible and advanced graphics modes.
| Compatible | The graphics driver is compatible with Windows3.x and Windows 95. In this mode, the world transformation cannot be set and cannot be modified. |
| Advanced | The graphics driver is capable of setting the world transformation. Windows NT supports this mode. |
The default mode is Compatible.
The three areas of difference in the behaviour of a device context between when operating in compatible and advanced are listed below.
| Text Output | In compatible mode, vector font
text output behaves much the same way as raster font text output with
respect to the world-to-device transformation.
In compatible mode, vector text is always written from left to right and right side up,
even when the remaining graphics is reflected in the x or y axis.
The height of the vector text is scaled however.
In compatible mode, non-horizontal text may be achieved only by specifying
non-zero escapement and orientation values for the currently selected logical font.
In advanced mode, vector text output fully conforms to the world-to-device transformation present in the device context. Raster fonts are also transformed, but in a limited way. |
| Rectangle Exclusion | In compatible mode, bottom and rightmost edges of rectangles are excluded from drawing.
Advanced mode draws rectangles that include the bottom and right edges. |
| Arc Drawing | In compatible mode,
arcs are drawn using the current arc direction in the device space.
With this convention, page-to-device transformations that reflect
in the x or y axes are not respected.
In advanced mode, arcs are drawn counter-clockwise in logical space. In advanced mode, arcs fully conform to the world-to-device transformation. |