CanvasDrawPoint

int CanvasDrawPoint (int panelHandle, int controlID, Point point);

Purpose

Draws a point on the canvas control at a position you specify.

CanvasDrawPoint draws the point using the current value of the following attributes:

>ATTR_PEN_COLOR
ATTR_PEN_MODE ATTR_PEN_WIDTH

At pen widths of greater than one, the point might appear to be non-circular.

Parameters

Input
Name Type Description
panelHandle integer Specifier for a particular panel that is currently in memory. You obtain this handle from LoadPanel, NewPanel, or DuplicatePanel.
controlID integer The defined constant, located in the .uir header file, that you assigned to the control in the User Interface Editor, or the ID returned by NewCtrl or DuplicateCtrl.
point Point Point structure specifying the location at which to draw the point.

The Point structure is defined as follows:

typedef struct
   {
   int x;
   int y;
   } Point;


You can create a Point without having to declare a variable by using the following function:

Point MakePoint (int x, int y);

Example

CanvasDrawPoint (panelHandle, controlID, MakePoint (20, 30));

Return Value

Name Type Description
status integer Return value indicating whether the function was successful. A negative number indicates that an error occurred.

Code Error Message String
xx Success