CreateBitmap

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This function creates a bitmap with the specified width, height, and bit depth.

HBITMAP
CreateBitmap( int
nWidth
, int
nHeight
, UINT
cPlanes
, UINT
cBitsPerPel
, CONST
VOID
*
lpvBits
);

Parameters

nWidth

[in] Specifies the bitmap width, in pixels.

nHeight

[in] Specifies the bitmap height, in pixels.

cPlanes

[in] Specifies the number of color planes used by the device. The value of this parameter must be 1.

cBitsPerPel

[in] Specifies the number of bits required to identify the color of a single pixel.

lpvBits

[in] Long void pointer to an array of color data used to set the colors in a rectangle of pixels. Each scan line in the rectangle must be word aligned (scan lines that are not word aligned must be padded with zeros). If this parameter is NULL, the new bitmap is undefined.

Return Values

A handle to a bitmap indicates success. NULL indicates failure. To get extended error information, call GetLastError.

Remarks

After a bitmap is created, it can be selected into a device context by calling the SelectObjectfunction.

While the CreateBitmapfunction can be used to create color bitmaps, for performance reasons applications should use CreateBitmapto create monochrome bitmaps and CreateCompatibleBitmapto create color bitmaps. When a color bitmap returned from CreateBitmapis selected into a device context, the system must ensure that the bitmap matches the format of the device context it is being selected into. Because CreateCompatibleBitmaptakes a device context, it returns a bitmap that has the same format as the specified device context. Because of this, subsequent calls to SelectObjectare faster than with a color bitmap returned from CreateBitmap.

If the bitmap is monochrome, zeros represent the foreground color and ones represent the background color for the destination device context.

If an application sets the nWidthor nHeightparameters to zero, CreateBitmapreturns the handle to a 1- by 1-pixel, monochrome bitmap.

When you no longer need the bitmap, call the DeleteObjectfunction to delete it.

Requirements

Runs on	Versions	Defined in	Include	Link to
Windows CE OS	1.0 and later	Wingdi.h		Mgbitmap.lib

Note This API is part of the complete Windows CE OS package as provided by Microsoft. The functionality of a particular platform is determined by the original equipment manufacturer (OEM) and some devices may not support this API.