The GX6325 driver functions reference chapter is organized in alphabetical order. Each function is presented starting with the syntax of the function, a short description of the function parameters description and type followed by a Comments, an Example (written in C), and a See Also sections.
All function parameters follow the same rules:
Strings are ASCIIZ (null or zero character terminated).
The first parameter of most functions is nHandle (16-bit integer). This parameter is required for operating the board and is returned by the Gx6325Initialize or the Gx6325InitializeVisa functions. The nHandle is used to identify the board when calling a function for programming and controlling the operation of that board.
All functions return a status with the last parameter named pnStatus. The pnStatus is zero if the function was successful, or less than a zero on error. The description of the error is available using the GxSWGetErrorString function or by using a predefined constant, defined in the driver interface files: GXSW.H, GXSW.BAS, GXSW.PAS or GX6325.DRV.
Parameter name are prefixed as follows:
Prefix |
Type |
Example |
a |
Array, prefix this before the simple type. |
anArray (Array of short) |
n |
Short (signed 16-bit) |
nMode |
d |
Double - 8 bytes floating point |
dReading |
dw |
Double word (unsigned 32-bit) |
dwTimeout |
hwnd |
Window handle (32-bit - integer). |
hwndPanel |
l |
Long (signed 32-bit) |
lBits |
p |
Pointer. Usually used to return a value. Prefix this before the simple type. |
pnStatus |
sz |
Null (zero value character) terminated string |
szMsg |
w |
Unsigned short (unsigned 16-bit) |
wParam |
Parameter Name Prefixes