2 Visual Components Manuals

Introduction to Visual Components 2.3
if (!ready)
{
VC_HANDLE = VA_Setup(1 , "vga");
if (VC_HANDLE)
ready = 1;
}
if (ready)
{
switch(selection)
{
case 1:Status=VA_StopProject(1,VC_HANDLE);break; /* Project is stopped */
case 2: AccessStatus=VA_Saccess(1,VC_HANDLE);
if (AccessStatus==0)
{
VA_Line(1,VC_HANDLE,10,10,100,100,1);
VA_Srelease(1,VC_HANDLE);
}
break;
case 3:Status=VA_StartProject(1,VC_HANDLE);break; /* Project is started */
default: break;
}
selection = 0;
}
}
3.3.8.36 Graphics and Text Output − VA_Textout
Writes a text on the screen.
The text is placed at the x and y coordinates. (For graphic displays, these are in pixels. For text displays, the
coordinates refer to the current character size). The background color can be changed with the bC variable, and
the foreground color with the fC variable. If '......' appears on the display, then the font index is invalid.
PP41: The foreground (fC) and background (bC) can only be 0, 1, or 255.
3.3.8.36.1 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 font_index UINT
Index of the font to be used
IN x/y UINT Upper left corner of the text
IN fC USINT Foreground color of the text
IN bC USINT Background color of the text
IN str STRING[80] Text to be output
OUT Return
Value
The font index corresponds to the font number used in the VC editor (beginning
with 0).
UINT Not equal to 0 if error occurs
3.3.8.36 Graphics and Text Output − VA_Textout 171