GRAYSTRINGPROC callback function (winuser.h)

The OutputProc function is an application-defined callback function used with the GrayString function. It is used to draw a string. The GRAYSTRINGPROC type defines a pointer to this callback function. OutputProc is a placeholder for the application-defined or library-defined function name.

Syntax

GRAYSTRINGPROC Graystringproc;

BOOL Graystringproc(
  HDC unnamedParam1,
  LPARAM unnamedParam2,
  int unnamedParam3
)
{...}

Parameters

unnamedParam1

A handle to a device context with a bitmap of at least the width and height specified by the nWidth and nHeight parameters passed to GrayString.

unnamedParam2

A pointer to the string to be drawn.

unnamedParam3

The length, in characters, of the string.

Return value

If it succeeds, the callback function should return TRUE.

If the function fails, the return value is FALSE.

Remarks

The callback function must draw an image relative to the coordinates (0,0).

Requirements

See also

GrayString

Painting and Drawing Functions

Painting and Drawing Overview