IPrintTicketProvider::GetSupportedVersions method (prdrvcom.h)
The IPrintTicketProvider::GetSupportedVersions method retrieves major version numbers of the print schemas that are supported by the plug-in provider.
Syntax
HRESULT GetSupportedVersions(
[in] IN HANDLE hPrinter,
[out] OUT INT * [] ppVersions,
[out] OUT INT *cVersions
);
Parameters
[in] hPrinter
A handle to the print device.
[out] ppVersions
A pointer to a variable that receives the address of the first element of an array of version numbers. Version numbers in the array can appear in any order. For more information about this parameter, see the following Remarks section.
[out] cVersions
A pointer to a variable that receives the number of elements in the array that is pointed to by ppVersions.
Return value
IPrintTicketProvider::GetSupportedVersions should return S_OK if the operation succeeds. If this method fails because of lack of memory or other resources, it should return a standard COM error code.
Remarks
IPrintTicketProvider::GetSupportedVersions returns the major version numbers of the print schemas that are supported by the provider interface. The only currently defined version number is 1. Providers can omit intermediate versions.
The plug-in is responsible for allocating the array memory that is pointed to by the ppVersions parameter. The plug-in should allocate this memory by using the CoTaskMemAlloc function described in the Microsoft Windows SDK documentation, but the plug-in is not responsible for freeing this memory.
Because IPrintTicketProvider::GetSupportedVersions can be called before the IPrintTicketProvider::BindPrinter method is called, the OEM plug-in provider must check version support based on the handle that is passed in the hPrinter parameter. As a result, the OEM plug-in provider should not close the printer handle that is associated with hPrinter.
Requirements
| Requirement | Value |
|---|---|
| Header | prdrvcom.h (include Prdrvcom.h) |