The ReadPrinter function retrieves data from the specified printer.
BOOL ReadPrinter( _In_ HANDLE hPrinter, _Out_ LPVOID pBuf, _In_ DWORD cbBuf, _Out_ LPDWORD pNoBytesRead );
A handle to the printer object for which to retrieve data. Use the OpenPrinter function to retrieve a printer object handle. Use the format: Printername, Job xxxx.
A pointer to a buffer that receives the printer data.
The size, in bytes, of the buffer to which pBuf points.
A pointer to a variable that receives the number of bytes of data copied into the array to which pBuf points.
If the function succeeds, the return value is a nonzero value.
If the function fails, the return value is zero.
This is a blocking or synchronous function and might not return immediately. How quickly this function returns depends on run-time factors such as network status, print server configuration, and printer driver implementation factors that are difficult to predict when writing an application. Calling this function from a thread that manages interaction with the user interface could make the application appear to be unresponsive.
ReadPrinter returns an error if the device or the printer is not bidirectional.
|Minimum supported client
||Windows 2000 Professional [desktop apps only]
|Minimum supported server
||Windows 2000 Server [desktop apps only]