XCreatePixmapFromBitmapData()XCreatePixmapFromBitmapData()Name
XCreatePixmapFromBitmapData – create a pixmap with depth from bitmap
data.
Synopsis
Pixmap XCreatePixmapFromBitmapData(display, drawable, data,
width, height, fg, bg, depth)
Display *display;
Drawable drawable;
char *data;
unsigned int width, height;
unsigned long fg, bg;
unsigned int depth;
Arguments
display Specifies a connection to an Display structure, returned from
XOpenDisplay().
drawable Specifies a drawable ID which indicates which screen the
pixmap is to be used on.
data Specifies the data in bitmap format.
width Specify the width and height in pixels of the pixmap to cre‐
height ate.
fg Specify the foreground and background pixel values to use.
bg
depth Specifies the depth of the pixmap. Must be valid on the
screen specified by drawable.
Returns
The created Pixmap.
DescriptionXCreatePixmapFromBitmapData() creates a pixmap of the given depth using
bitmap data and foreground and background pixel values.
The following format for the data is assigned, where the variables are
members of the XImage structure described in Volume One, Chapter 6,
Drawing Graphics and Text:
format=XYPixmap
bit_order=LSBFirst
byte_order=LSBFirst
bitmap_unit=8
bitmap_pad=8
xoffset=0
no extra bytes per line
XCreatePixmapFromBitmapData() creates an image from the data and uses
XPutImage() to place the data into the pixmap. For example:
#define gray_width 16
#define gray_height 16
#define gray_x_hot 8
#define gray_y_hot 8
static char gray_bits[] = {
0xf8, 0x1f, 0xe3, 0xc7, 0xcf, 0xf3, 0x9f, 0xf9, 0xbf,
0xfd, 0x33, 0xcc, 0x7f, 0xfe, 0x7f, 0xfe, 0x7e, 0x7e,
0x7f, 0xfe, 0x37, 0xec, 0xbb, 0xdd, 0x9c, 0x39, 0xcf,
0xf3, 0xe3, 0xc7, 0xf8, 0x1f};
unsigned long foreground, background;
unsigned int depth;
/* open display, determine colors and depth */
Pixmap XCreatePixmapFromBitmapData(display, window, gray_bits,
gray_width, gray_height, foreground, background, depth);
If you want to use data of a different format, it is straightforward to
write a routine that does this yourself, using images.
Pixmaps should be considered a precious resource, since many servers
have limits on the amount of off-screen memory available.
If you are creating a pixmap for use in XCreatePixmapCursor(), specify
depth=1, fg=1, and bg=0.
Errors
BadAlloc
BadDrawable
BadGC
BadValue depth is not a valid depth on the screen specified by draw‐
able.
See AlsoXCreateBitmapFromData(), XCreateFontCursor(), XCreatePixmap(), XCre‐
atePixmapCursor(), XDefineCursor(), XFreeCursor(), XFreePixmap(),
XListPixmapFormats(), XQueryBestCursor(), XQueryBestSize(), XRead‐
BitmapFile(), XRecolorCursor(), XUndefineCursor().
Xlib - Pixmaps and Bitmaps XCreatePixmapFromBitmapData()
