ContrastCmdInputParm (Windows Embedded CE 6.0)
1/6/2010
This structure supports software control of a platform's display contrast. Use this structure conjunction with the GWES function ExtEscape and the display driver's DrvEscape functions.
Syntax
struct ContrastCmdInputParm {
int command;
int parm;
};
Members
command
Contrast command. The following table shows the available contrast commands.Contrast command Description CONTRAST_CMD_GET
Gets the current contrast. The parm member is ignored. The return value from DrvEscape should be the current contrast setting.
CONTRAST_CMD_SET
Sets the current contrast. The parm member contains the desired contrast setting. The return value from DrvEscape should be the actual contrast setting after the operation.
CONTRAST_CMD_INCREASE
Increases the contrast by the amount specified in parm. The return value from DrvEscape should be the resulting contrast setting.
CONTRAST_CMD_DECREASE
Decreases the contrast by the amount specified in parm. The return value from DrvEscape should be the resulting contrast setting.
CONTRAST_CMD_DEFAULT
Applies the default contrast setting. The parm member is ignored. The return value from DrvEscape should be the actual contrast setting after the operation.
CONTRAST_CMD_MAX
Applies the maximum contrast setting. The return value from DrvEscape should be the actual contrast setting after the operation.
- parm
Value that applies to some of the contrast commands.
Requirements
| Header | pwingdi.h |
| Windows Embedded CE | Windows CE 2.12 and later |