Queuing device read request until ExecuteQueuingAccess() is called after this API is called.
Queuing is performed in a unit of WinGP SDK handle.
Function Name
INT WINAPI BeginQueuingRead();
Argument
None
Return value (NULL)
Normal End: 0
Problem: Error code
Special Item
Do not call API to execute device read operations after calling BeginQueuingRead() until ExecuteQueuingAccess() is called. After these function calls, cache read and direct read commands will be queued. However, cache read and direct read commands cannot be mixed.
To cancel a queuing command, call CancelQueuingAccess().
The maximum number of queuing commands is 1500, the maximum byte number is under 1 MB.