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About - About the DLL
This is a USBm.dll function that returns information about the USBm dynamic link library.
true⁄false USBm_About( string )
The USBm_About function syntax has these parts:
|string||Any valid string expression.|
In VB the string passed as an argument must be large enough to hold all the characters that the function places in the string. The best way to acheive this is to set the string to a large size with the String function as in this code:
|strStrng = String(250, " ")|
Note: USBm_About always returns TRUE.
Note: USBm_About does not affect the internal error string.
VB Declaration (USBmAPI.bas)
|Public Declare Function USBm_About _|
Lib "USBm.dll" _
(ByVal aboutstring As String) _
|Dim strng As String * 255|
frmStatus.lstDevices.AddItem "About the USBm DLL: " & strng
This code fragment shows that strng is loaded with the "about" text of the DLL. Assuming that the form called "Main" exists with a text box called "Info", the "about" information will be made visible to the user.
|int USBm_About( char *about );|
About, Copyright, Version Date, and Version Number are all handled by the RobotBASIC function usbm_DllSpecs().
Returns a string that contains information about the DLL. There are four sections seperated by the | character. You can use the Extract() function to extract each section seperately if desired. The sections are:
Hardware: U401 USB Interface U421 USB Interface U451 USB Interface
Programming: USBm DLL Programming Download Files
Application Notes: U4x1 Application Notes Misc Applications and Information FAQ
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