ContrastCmdInputParm
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.
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
OS Versions: Windows CE 2.12 and later.
Header: Pwingdi.h.
See Also
Display Drivers | Display Driver Escape Codes | ExtEscape
Last updated on Tuesday, May 18, 2004
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