Difference between revisions of "Allocation"
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== gflAllockBitmap == | >== gflAllockBitmap == | ||
The gflAllockBitmap function allocates a picture, and returns a pointer on a [[Structures#GFL_BITMAP|GFL_BITMAP]] structure. | The gflAllockBitmap function allocates a picture, and returns a pointer on a [[Structures#GFL_BITMAP|GFL_BITMAP]] structure. | ||
GFL_BITMAP* | GFL_BITMAP* <b>gflAllockBitmap</b>( | ||
GFL_BITMAP_TYPE bitmap_type, | GFL_BITMAP_TYPE bitmap_type, | ||
GFL_INT32 width, | GFL_INT32 width, | ||
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'''See also''' | '''See also''' | ||
:[[#gflFreeBitmap|gflFreeBitmap]], [[#gflFreeBitmapData|gflFreeBitmapData]] | :[[#gflFreeBitmap|gflFreeBitmap]], [[#gflFreeBitmapData|gflFreeBitmapData]] | ||
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== gflAllockBitmapEx == | == gflAllockBitmapEx == | ||
Revision as of 01:50, 18 November 2010
>== gflAllockBitmap ==
The gflAllockBitmap function allocates a picture, and returns a pointer on a GFL_BITMAP structure.
GFL_BITMAP* <b>gflAllockBitmap</b>( GFL_BITMAP_TYPE bitmap_type, GFL_INT32 width, GFL_INT32 height, GFL_UINT32 line_padding, const GFL_COLOR* color );
Parameters
- bitmap_type
- Type of picture wanted.
GFL_BINARY 0x0001 Binary (8 bits) GFL_GREY 0x0002 Grey scale (8 bits) GFL_COLORS 0x0004 Colors with colormap (8 bits) GFL_RGB 0x0008 TrueColors - Red/Green/Blue (24 bits) GFL_RGBA 0x0010 TrueColors - Red/Green/Blue/Alpha (32 bits) GFL_BGR 0x0020 TrueColors - Blue/Green/Red (24 bits) GFL_ABGR 0x0040 TrueColors - Alpha/Blue/Green/Red (32 bits) GFL_BGRA 0x0100 TrueColors - Blue/Green/Red/Alpha (32 bits) GFL_ARGB 0x0200 TrueColors - Alpha/Red/Green/Blue (32 bits)
- width
- Width of the picture wanted.
- height
- Height of the picture wanted.
- line_padding
- Pad for a pixel line.
- For a value of 4, each line of pixels has a multiple of 4 bytes (32 bits).
- color
- Pointer to a GFL_COLOR structure used to set the background color.
- Can be NULL, the background color is (0,0,0).
Return value
- A pointer to a GFL_BITMAP structure or NULL.
See also
gflAllockBitmapEx
The gflAllockBitmapEx function allocates a picture, and returns a pointer on a GFL_BITMAP structure.
GFL_BITMAP* gflAllockBitmapEx( GFL_BITMAP_TYPE bitmap_type, GFL_INT32 width, GFL_INT32 height, GFL_UINT16 bits_per_component, GFL_UINT32 line_padding, const GFL_COLOR* color );
Parameters
- bitmap_type
- Type of picture wanted.
GFL_BINARY 0x0001 Binary (8 bits) GFL_GREY 0x0002 Grey scale (8 bits) GFL_COLORS 0x0004 Colors with colormap (8 bits) GFL_RGB 0x0008 TrueColors - Red/Green/Blue (24 bits) GFL_RGBA 0x0010 TrueColors - Red/Green/Blue/Alpha (32 bits) GFL_BGR 0x0020 TrueColors - Blue/Green/Red (24 bits) GFL_ABGR 0x0040 TrueColors - Alpha/Blue/Green/Red (32 bits) GFL_BGRA 0x0100 TrueColors - Blue/Green/Red/Alpha (32 bits) GFL_ARGB 0x0200 TrueColors - Alpha/Red/Green/Blue (32 bits)
- width
- Width of the picture wanted.
- height
- Height of the picture wanted.
- bits_per_component
- Bits per component wanted. Can be 8 or 16.
- line_padding
- Pad for a pixel line.
- For a value of 4, each line of pixels has a multiple of 4 bytes (32 bits).
- color
- Pointer to a GFL_COLOR structure used to set the background color.
- Can be NULL, the background color is (0,0,0).
Return value
- A pointer to a GFL_BITMAP structure or NULL.
See also
gflFreeBitmap
The gflFreeBitmap function frees a GFL_BITMAP structure, and his content.
void gflFreeBitmap( GFL_BITMAP* bitmap );
Parameters
- bitmap
- Pointer to a GFL_BITMAP structure.
See also
gflFreeBitmapData
The gflFreeBitmapData function frees the content of a GFL_BITMAP structure.
void gflFreeBitmapData( GFL_BITMAP* bitmap );
Parameters
- bitmap
- Pointer to a GFL_BITMAP structure.
See also
gflCloneBitmap
The gflCloneBitmap function allows to clone a bitmap, and returns a pointer to a GFL_BITMAP structure.
GFL_BITMAP* gflCloneBitmap( const GFL_BITMAP* bitmap );
Parameters
- bitmap
- Pointer to a GFL_BITMAP structure.
Return value
- A pointer to a GFL_BITMAP structure or NULL.
See also
gflMemoryAlloc
The gflMemoryAlloc function allocates memory.
void* gflMemoryAlloc( GFL_UINT32 size );
Parameters
- size
- Size wanted.
Return value
- The function returns NULL if an error occurs.
See also
gflMemoryRealloc
The gflMemoryRealloc function reallocates a memory area.
void* gflMemoryRealloc( void* ptr, GFL_UINT32 size );
Parameters
- ptr
- Pointer to a memory area allocated.
- size
- New size.
Return value
- The function returns NULL if an error occurs.
See also
gflMemoryFree
The gflMemoryFree function frees memory.
void gflMemoryFree( void* ptr );
Parameters
- ptr
- Pointer to a memory area allocated.
See also