LINEDDAPROC callback function (wingdi.h)

Article
02/22/2024

The LineDDAProc function is an application-defined callback function used with the LineDDA function. It is used to process coordinates. The LINEDDAPROC type defines a pointer to this callback function. LineDDAProc is a placeholder for the application-defined function name.

Syntax

LINEDDAPROC Lineddaproc;

void Lineddaproc(
  int unnamedParam1,
  int unnamedParam2,
  LPARAM unnamedParam3
)
{...}

Parameters

unnamedParam1

unnamedParam2

unnamedParam3

Return value

None

Remarks

An application registers a LineDDAProc function by passing its address to the LineDDA function.

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Target Platform	Windows
Header	wingdi.h (include Windows.h)