| #define SETKERNTRACK 770 |
| short Control(lpDevice, SETKERNTRACK, lpInData, lpOutData) | |||
| LPPDEVICE lpDevice; | |||
| LPINT lpInData; | |||
| LPINT lpOutData; |
The SETKERNTRACK escape specifies which kerning track a driver that supports automatic-track kerning should use. A kerning track of zero disables automatic-track kerning. When this escape is enabled, the driver automatically kerns all characters according to the specified track. The driver reflects this kerning both on the printer and in calls to the GetTextExtent (GDI.91) function.
lpDevice
Points to a PDEVICE structure specifying the destination device.
lpInData
Points to a 16-bit variable that specifies the kerning track to use. A value of zero disables this feature. The etmKernTracks member in the EXTTEXTMETRIC structure for the driver specifies the maximum permitted value. Each permitted value corresponds to a position in the track-kerning table (using one as the first item in the table).
lpOutData
Points to a 16-bit variable that receives the previous kerning track.
The return value is 1 if the escape is successful. Otherwise, it is 0 if it is not, or if the escape is not implemented.
The default state is zero, which means that automatic-track kerning is disabled.
A driver does not have to support this escape just because it supplies the track-kerning table to the application using the GETTRACKKERNTABLE escape. In the case where GETTRACKKERNTABLE is supported but SETKERNTRACK is not, it is the application's responsibility to properly space the characters on the output device.