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Overview |
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Group |
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Quick Info
Windows NT
| Yes
| Win95
| Yes
| Win32s
| Yes
| Import Library
| gdi32.lib
| Header File
| wingdi.h
| Unicode
| No
| Platform Notes
| Windows 95: int == 16 bits
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SetDIBits
The SetDIBits function sets the pixels in a bitmap using the color data found in the
specified device-independent bitmap (DIB).
int SetDIBits(
HDC hdc,
| // handle of device context
| HBITMAP hbmp,
| // handle of bitmap
| UINT uStartScan,
| // starting scan line
| UINT cScanLines,
| // number of scan lines
| CONST VOID *lpvBits,
| // array of bitmap bits
| CONST BITMAPINFO *lpbmi,
| // address of structure with bitmap data
| UINT fuColorUse
| // type of color indices to use
| );
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Parameters
hdc
Identifies a device context.
hbmp
Identifies the bitmap that is to be altered using the color data from the
specified DIB.
uStartScan
Specifies the starting scan line for the device-independent color data in the
array pointed to by the lpvBits parameter.
cScanLines
Specifies the number of scan lines found in the array containing
device-independent color data.
lpvBits
Points to the DIB color data, stored as an array of bytes. The format of the
bitmap values depends on the biBitCount member of the BITMAPINFO structure pointed to by the lpbmi parameter.
lpbmi
Points to a BITMAPINFO data structure that contains information about the DIB.
fuColorUse
Specifies whether the bmiColors member of the BITMAPINFO structure was provided and, if so, whether bmiColors contains explicit red, green, blue (RGB) values or palette indices. The fuColorUse parameter must be one of the following values:
Value
| Meaning
| DIB_PAL_COLORS
| The color table consists of an array of 16-bit indices into the logical
palette of the device context identified by the hdc parameter.
| DIB_RGB_COLORS
| The color table is provided and contains literal RGB values.
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Return Values
If the function succeeds, the return value is the number of scan lines copied.
If the function fails, the return value is zero. To get extended error
information, call GetLastError.
Remarks
Optimal bitmap drawing speed is obtained when the bitmap bits are indices into
the system palette.
Applications can retrieve the system palette colors and indices by calling the GetSystemPaletteEntries function. After the colors and indices are retrieved, the application can
create the DIB. For more information, see System Palette.
The device context identified by the hdc parameter is used only if the DIB_PAL_COLORS constant is set for the fuColorUse parameter; otherwise it is ignored.
The bitmap identified by the hbmp parameter must not be selected into a device context when the application
calls this function.
The origin for bottom-up DIBs is the lower-left corner of the bitmap; the
origin for top-down DIBs is the upper-left corner of the bitmap.
See Also
GetDIBits, GetSystemPaletteEntries, BITMAPINFO
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