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DEVHTADJDATA structure (winddi.h)

  • Article

The DEVHTADJDATA structure is used as input to the HTUI_DeviceColorAdjustment function.

Syntax

typedef struct _DEVHTADJDATA {
  DWORD      DeviceFlags;
  DWORD      DeviceXDPI;
  DWORD      DeviceYDPI;
  PDEVHTINFO pDefHTInfo;
  PDEVHTINFO pAdjHTInfo;
} DEVHTADJDATA, *PDEVHTADJDATA;

Members

DeviceFlags

Is a set of flags, set by the caller, describing color mixing and color versus gray-scale output. Either, both, or neither of the following flags should be set, as appropriate:

Flag Definition
DEVHTADJF_ADDITIVE_DEVICE
If set, the device uses additive color mixing.
If not set, the device uses subtractive color mixing.
DEVHTADJF_COLOR_DEVICE
If set, the device produces color output.
If not set, the device produces gray-scaled output.

DeviceXDPI

Is the caller-supplied horizontal resolution, in dots per inch, for the device.

DeviceYDPI

Is the caller-supplied vertical resolution, in dots per inch, for the device.

pDefHTInfo

Is a caller-supplied pointer to a DEVHTINFO structure containing the device's default halftoning properties.

pAdjHTInfo

Is a caller-supplied pointer to a DEVHTINFO structure containing the device's current halftoning properties. Before the HTUI_DeviceColorAdjustment function returns, it modifies this structure's contents, if the user has adjusted the halftoning properties. Can be NULL (see the following Remarks section).

Remarks

If pAdjHTInfo is NULL, or if pAdjHTInfo and pDefHTInfo point to the same buffer, the HTUI_DeviceColorAdjustment function displays the halftoning properties supplied by pDefHTInfo but does not allow the user to modify them.

Requirements

Requirement Value
Header winddi.h (include Winddi.h)