SetDIBitsToDevice function (wingdi.h)

Article
11/19/2022

The SetDIBitsToDevice function sets the pixels in the specified rectangle on the device that is associated with the destination device context using color data from a DIB, JPEG, or PNG image.

Syntax

int SetDIBitsToDevice(
  [in] HDC              hdc,
  [in] int              xDest,
  [in] int              yDest,
  [in] DWORD            w,
  [in] DWORD            h,
  [in] int              xSrc,
  [in] int              ySrc,
  [in] UINT             StartScan,
  [in] UINT             cLines,
  [in] const VOID       *lpvBits,
  [in] const BITMAPINFO *lpbmi,
  [in] UINT             ColorUse
);

Parameters

[in] hdc

A handle to the device context.

[in] xDest

The x-coordinate, in logical units, of the upper-left corner of the destination rectangle.

[in] yDest

The y-coordinate, in logical units, of the upper-left corner of the destination rectangle.

[in] w

The width, in logical units, of the image.

[in] h

The height, in logical units, of the image.

[in] xSrc

The x-coordinate, in logical units, of the lower-left corner of the image.

[in] ySrc

The y-coordinate, in logical units, of the lower-left corner of the image.

[in] StartScan

The starting scan line in the image.

[in] cLines

The number of DIB scan lines contained in the array pointed to by the lpvBits parameter.

[in] lpvBits

A pointer to the color data stored as an array of bytes. For more information, see the following Remarks section.

[in] lpbmi

A pointer to a BITMAPINFO structure that contains information about the DIB.

[in] ColorUse

Indicates whether the bmiColors member of the BITMAPINFO structure contains explicit red, green, blue (RGB) values or indexes into a palette. For more information, see the following Remarks section.

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 indexes into the currently selected logical palette.
DIB_RGB_COLORS	The color table contains literal RGB values.

Return value

If the function succeeds, the return value is the number of scan lines set.

If zero scan lines are set (such as when dwHeight is 0) or the function fails, the function returns zero.

If the driver cannot support the JPEG or PNG file image passed to SetDIBitsToDevice, the function will fail and return GDI_ERROR. If failure does occur, the application must fall back on its own JPEG or PNG support to decompress the image into a bitmap, and then pass the bitmap to SetDIBitsToDevice.

Remarks

Optimal bitmap drawing speed is obtained when the bitmap bits are indexes into the system palette.

Applications can retrieve the system palette colors and indexes by calling the GetSystemPaletteEntries function. After the colors and indexes are retrieved, the application can create the DIB. For more information about the system palette, see Colors.

The scan lines must be aligned on a DWORD except for RLE-compressed bitmaps.

The origin of a bottom-up DIB is the lower-left corner of the bitmap; the origin of a top-down DIB is the upper-left corner.

To reduce the amount of memory required to set bits from a large DIB on a device surface, an application can band the output by repeatedly calling SetDIBitsToDevice, placing a different portion of the bitmap into the lpvBits array each time. The values of the uStartScan and cScanLines parameters identify the portion of the bitmap contained in the lpvBits array.

The SetDIBitsToDevice function returns an error if it is called by a process that is running in the background while a full-screen MS-DOS session runs in the foreground.

If the biCompression member of BITMAPINFOHEADER is BI_JPEG or BI_PNG, lpvBits points to a buffer containing a JPEG or PNG image. The biSizeImage member of specifies the size of the buffer. The fuColorUse parameter must be set to DIB_RGB_COLORS.
To ensure proper metafile spooling while printing, applications must call the CHECKJPEGFORMAT or CHECKPNGFORMAT escape to verify that the printer recognizes the JPEG or PNG image, respectively, before calling SetDIBitsToDevice.

ICM: Color management is performed if color management has been enabled with a call to SetICMMode with the iEnableICM parameter set to ICM_ON. If the bitmap specified by lpbmi has a BITMAPV4HEADER that specifies the gamma and endpoints members, or a BITMAPV5HEADER that specifies either the gamma and endpoints members or the profileData and profileSize members, then the call treats the bitmap's pixels as being expressed in the color space described by those members, rather than in the device context's source color space.

Examples

For an example, see Testing a Printer for JPEG or PNG Support.

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Target Platform	Windows
Header	wingdi.h (include Windows.h)
Library	Gdi32.lib
DLL	Gdi32.dll

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