Qt 4.0: Qt 3 Support Members for QPixmap

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# Qt 3 Support Members for QPixmap

The following class members are part of the Qt 3 support layer. They are provided to help you port old code to Qt 4. We advise against using them in new code.

- QPixmap class reference

### Public Types

- enum ColorMode { Auto, Color, Mono }

### Public Functions

- QPixmap ( const QString & fileName, const char * format, ColorMode mode )
- QPixmap ( const QImage & image )
- bool convertFromImage ( const QImage & image, ColorMode mode )
- bool convertFromImage ( const QImage & image, Qt::ImageConversionFlags flags = Qt::AutoColor )
- QImage convertToImage () const
- bool load ( const QString & fileName, const char * format, ColorMode mode )
- bool loadFromData ( const uchar * buf, uint len, const char * format, ColorMode mode )
- void resize ( int w, int h )
- void resize ( const QSize & size )
- bool selfMask () const
- QPixmap xForm ( const QMatrix & matrix ) const
- operator QImage () const
- QPixmap & operator= ( const QImage & image )

- 8 public functions inherited from QPaintDevice

## Member Type Documentation

### enum QPixmap::ColorMode

This enum type defines the color modes that exist for converting QImage objects to QPixmap.

Constant | Value | Description
--- | --- | ---
`QPixmap::Auto` | `0` | Select `Color` or `Mono` on a case-by-case basis.
`QPixmap::Color` | `1` | Always create colored pixmaps.
`QPixmap::Mono` | `2` | Always create bitmaps.

## Member Function Documentation

### QPixmap::QPixmap ( const QString & fileName, const char * format, ColorMode mode )

Use the constructor that takes a Qt::ImageConversionFlag instead.

See also ColorMode and Qt::ImageConversionFlag.

### QPixmap::QPixmap ( const QImage & image )

Constructs a pixmap from the QImage image.

See also fromImage().

### bool QPixmap::convertFromImage ( const QImage & image, ColorMode mode )

Use the static function QPixmap::fromImage() instead.

### bool QPixmap::convertFromImage ( const QImage & image, Qt::ImageConversionFlags flags = Qt::AutoColor )

This is an overloaded member function, provided for convenience. It behaves essentially like the above function.

Use the static function QPixmap::fromImage() instead.

### QImage QPixmap::convertToImage () const

Use toImage() instead.

### bool QPixmap::load ( const QString & fileName, const char * format, ColorMode mode )

This is an overloaded member function, provided for convenience. It behaves essentially like the above function.

Use the load() function that takes a Qt::ImageConversionFlag instead.

See also ColorMode and Qt::ImageConversionFlag.

### bool QPixmap::loadFromData ( const uchar * buf, uint len, const char * format, ColorMode mode )

This is an overloaded member function, provided for convenience. It behaves essentially like the above function.

Use the loadFromData() function that takes a Qt::ImageConversionFlag instead.

See also ColorMode and Qt::ImageConversionFlag.

### void QPixmap::resize ( int w, int h )

Use the QPixmap constructor that takes two `int`s and pass w and h.

For example, if you have code like

        pixmap.resize(10, 20);

you can rewrite it as

        pixmap = QPixmap(10, 20);

### void QPixmap::resize ( const QSize & size )

This is an overloaded member function, provided for convenience. It behaves essentially like the above function.

Use the QPixmap constructor that takes a QSize and pass it size.

For example, if you have code like

        pixmap.resize(size);

you can rewrite it as

        pixmap = QPixmap(size);

### bool QPixmap::selfMask () const

### QPixmap QPixmap::xForm ( const QMatrix & matrix ) const

Use transform() instead.

### QPixmap::operator QImage () const

Returns the pixmap as a QImage.

This automatic conversion is disabled when `QT3_SUPPORT` is not defined. Use toImage() instead.

### QPixmap & QPixmap::operator= ( const QImage & image )

This is an overloaded member function, provided for convenience. It behaves essentially like the above function.

Converts the image image to a pixmap that is assigned to this pixmap. Returns a reference to the pixmap.

See also fromImage().