IAMTuner::get_CountryCode method (strmif.h)
[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The get_CountryCode method retrieves the country/region code that establishes the current channel-to-frequency mapping.
Syntax
HRESULT get_CountryCode(
[out] long *plCountryCode
);
Parameters
[out] plCountryCode
Pointer to a variable that receives the country/region code currently in use by the TV Tuner filter.
Return value
Returns an HRESULT value that depends on the implementation of the interface.
Remarks
The IAMTuner::put_CountryCode method determines which channel-to-frequency mapping table to use. This establishes the base frequencies for the given country/region. Use the IAMTVTuner::AutoTune method to determine the exact frequencies for specific regions.
Override the country/region code when a country/region wants to receive broadcast video from a different national source. For a list of country/region codes, see International Analog TV Tuning.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps only] |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | strmif.h (include Dshow.h) |
| Library | Strmiids.lib |