2 Visual Components Manuals

VA_GetPaletteColor Retrieving Palette Color
IPC Colors IPC Color Display Palette
SG3 Colors SG3 Black and White Palette
An overview of available colors can be found here.
3.3.8.1 Copying a Rectangular Screen Area − VA_CopyScreenRect
The VA_CopyScreenRect function copies a rectangular screen area (x1, y1, x2, y2) by dx pixels horizontally and
dy pixels vertically.
Note:
This function is only available on VGA displays.
3.3.8.1.1 Parameter
I/O Parameter Type Meaning
IN enable BOOL This function is only executed if enable is TRUE.
IN VCHandle UDINT The handle returned by VA_Setup.
IN x1/y1 UINT Coordinates of the upper left corner of the rectangle
IN x2/y2 UINT The width and height of the rectangle to be copied
IN dx/dy INT Number of pixels in the X and Y directions in which the rectangle should be copied.
OUT Return Value UINT Not equal to 0 if error occurs
3.3.8.1.2 Example for Automation Basic
(* cyclic program *)
x1 = 100
y1 = 150
x2 = 250
y2 = 150
dx = 10
dy = 10
if ready 1 then
VC_HANDLE = VA_Setup(1 "vga") ,
VC_HANDLE if 0 then
ready = 1
endif
endif
if ready = 1 then
VA_Saccess(1,VC_HANDLE)= if
0 then
VA_CopyScreenRect (1,VC_HANDLE,x1,y1,
width,height,dx,dy)
VA_Srelease(1,VC_HANDLE)
endif
endif
3.3.8.1.3 Example for C Programming
#include
#include
#include
UINT _GLOBAL ready;
unsigned long VC_HANDLE;
UINT _GLOBAL x1;
UINT _GLOBAL width;
UINT _GLOBAL y1;
UINT _GLOBAL height;
SINT _GLOBAL dx;
SINT _GLOBAL dy;
_CYCLIC void Cyclic (void)
{
Introduction to Visual Components 2.3
136 3.3.8.1 Copying a Rectangular Screen Area − VA_CopyScreenRect