WIC progressive decoding sample

Article
03/20/2021

This sample demonstrates the use of Windows Imaging Component (WIC) to decode an image that is encoded with progressive levels. This sample uses Direct2D to render the different progressive levels to the screen.

Requirements

This sample has the following requirements.

Requirement	Value
Minimum supported client	Windows 7
Minimum Windows SDK	Windows Software Development Kit (SDK) for Windows 7

Downloading the sample

This sample is available at WIC progressive encoding.

Building the sample

Using Visual Studio (preferred method)

Open Windows Explorer and navigate to the directory.
Double-click the icon for the .sln (solution) file to open the file in Visual Studio.
In the Build menu, select Build Solution. The application will be built in the default \Debug or \Release directory.

Using the command prompt

To build the sample using the command prompt.

Open the command prompt and navigate to the sample directory.
Type msbuild WICProgressiveDecoding.sln

Running the sample

After the application is launched, load an image file through file open menu. On loading, the default progressive level is set to 0. You can navigate to different progressive levels either through menu or Up/Down key. The current progressive level text is displayed on the main window status bar. Window resizing is supported.

Note

Progressive decoding is available only for images that have been progressively encoded. The image provided with this sample has been progressively encoded.