IWICProgressiveLevelControl interface
Exposes methods for obtaining information about and controlling progressive decoding.
Members
The IWICProgressiveLevelControl interface inherits from the IUnknown interface. IWICProgressiveLevelControl also has these types of members:
Methods
The IWICProgressiveLevelControl interface has these methods.
| Method | Description |
|---|---|
| GetCurrentLevel |
Gets the last level set by the SetCurrentLevel call. |
| GetLevelCount |
Gets the number of levels of progressive decoding supported by the CODEC. |
| SetCurrentLevel |
Specifies the level to retrieve on the next call to CopyPixels. |
Remarks
Images can only be progressively decoded if they were progressively encoded. Progressive images automatically start at the highest (best quality) progressive level. The caller must manually set the decoder to a lower progressive level.
E_NOTIMPL is returned if the codec does not support progressive level decoding.
Requirements
|
Minimum supported client |
Windows 7, Windows Vista with SP2 and Platform Update for Windows Vista [desktop apps | Windows Store apps] |
|---|---|
|
Minimum supported server |
Windows Server 2008 R2, Windows Server 2008 with SP2 and Platform Update for Windows Server 2008 [desktop apps | Windows Store apps] |
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Header |
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IDL |
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DLL |
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See also