2 Visual Components Manuals

Introduction to Visual Components 2.3
x1 = 150;
y1 = 100;
x2 = 100;
y2 = 150;
dx = 10;
dy = 10;
if (!ready)
{
VC_HANDLE = VA_Setup(1 "vga"); ,
if (VC_HANDLE)
ready = 1;
}
if (ready)
{
if (!VA_Saccess(1,VC_HANDLE))
{
VA_CopyScreenRect width,heighty2,dx,dy);
(1,VC_HANDLE,x1,y1,
VA_Srelease(1,VC_HANDLE);
}
}
}
3.3.8.2 Displaying a Bitmap − VA_DrawBitmap
The VA_DrawBitmap function draws a bitmap at the specified coordinates on the screen. This bitmap must exist
and be used in the project.
Note:
This function is only available on VGA displays.
3.3.8.2.1 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 index UINT Bitmap index in the project (must be used in the project).
IN x UINT X coordinate of the upper left corner of the bitmap.
IN y UINT Y coordinate of the upper left corner of the bitmap.
OUT Return Value UINT Not equal to 0 if error occurs
3.3.8.2.2 Example for Automation Basic
(* cyclic program *)
x = 100
y = 150
index = 1
if ready 1 then
VC_HANDLE = VA_Setup(1 "vga") ,
if VC_HANDLE 0 then
ready = 1
endif
endif
if ready = 1 then
if VA_Saccess(1,VC_HANDLE)= 0 then
VA_DrawBitmap (1,VC_HANDLE,index,x,y)
VA_Srelease(1,VC_HANDLE)
endif
endif
3.3.8.2.3 Example for C Programming
#include
#include
#include
3.3.8.2 Displaying a Bitmap − VA_DrawBitmap 137