XReadBitmapFile(3)

NAME
XReadBitmapFile, XReadBitmapFileData, XWriteBitmapFile, XCreatePixmapFromBitmapData, XCreateBitmapFromData - manipulate bitmaps

SYNTAX

int XReadBitmapFile(Display *display, Drawable d, char *filename, unsigned int *width_return, unsigned int *height_return, Pixmap *bitmap_return, int *x_hot_return, int *y_hot_return);

int XReadBitmapFileData(char *filename, unsigned int *width_return, unsigned int *height_return, unsigned char *data_return, int *x_hot_return, int *y_hot_return);

int XWriteBitmapFile(Display *display, char *filename, Pixmap bitmap, unsigned int width, unsigned int height, int x_hot, int y_hot);

Pixmap XCreatePixmapFromBitmapData(Display *display, Drawable d, char *data, unsigned int width, unsigned int height, unsigned long fg, unsigned int bg, unsigned int depth);

Pixmap XCreateBitmapFromData(Display *display, Drawable d, char *data, unsigned int width, unsigned int height);

ARGUMENTS

bitmap
    Specifies the bitmap.

bitmap_return
    Returns the bitmap that is created.

d   Specifies the drawable that indicates the screen.

data
    Specifies the data in bitmap format.

data
    Specifies the location of the bitmap data.

data_return
    Returns the bitmap data.

depth
    Specifies the depth of the pixmap.

display
    Specifies the connection to the X server.

fg

bg  Specify the foreground and background pixel values to use.

filename
    Specifies the file name to use. The format of the file name is operating-system dependent.

width

height
    Specify the width and height.

width_return

height_return
    Return the width and height values of the read in bitmap file.

x_hot

y_hot
    Specify where to place the hotspot coordinates (or -1,-1 if none are present) in the file.

x_hot_return

y_hot_return
    Return the hotspot coordinates.

DESCRIPTION
The function reads in a file containing a bitmap. The file is parsed in the encoding of the current locale. The ability to read other than the standard format is implementation-dependent. If the file cannot be opened, returns If the file can be opened but does not contain valid bitmap data, it returns If insufficient working storage is allocated, it returns If the file is readable and valid, it returns

returns the bitmap's height and width, as read from the file, to width_return and height_return. It then creates a pixmap of the appropriate size, reads the bitmap data from the file into the pixmap, and assigns the pixmap to the caller's variable bitmap. The caller must free the bitmap using when finished. If name_x_hot and name_y_hot exist, returns them to x_hot_return and y_hot_return; otherwise, it returns -1,-1.

can generate and errors.

The function reads in a file containing a bitmap, in the same manner as but returns the data directly rather than creating a pixmap in the server. The bitmap data is returned in data_return; the client must free this storage when finished with it by calling The status and other return values are the same as for

The function writes a bitmap out to a file in the X Version 11 format. The name used in the output file is derived from the file name by deleting the directory prefix. The file is written in the encoding of the current locale. If the file cannot be opened for writing, it returns If insufficient memory is allocated, returns otherwise, on no error, it returns If x_hot and y_hot are not -1, -1, writes them out as the hotspot coordinates for the bitmap.

can generate and errors.

The function creates a pixmap of the given depth and then does a bitmap-format of the data into it. The depth must be supported by the screen of the specified drawable, or a error results.

can generate and errors.

The function allows you to include in your C program (using a bitmap file that was written out by (X version 11 format only) without reading in the bitmap file. The following example creates a gray bitmap:

#include "gray.bitmap"

Pixmap bitmap; bitmap = XCreateBitmapFromData(display, window, gray_bits, gray_width, gray_height);

If insufficient working storage was allocated, returns It is your responsibility to free the bitmap using when finished.

can generate a error.

DIAGNOSTICS

The server failed to allocate the requested resource or server memory.

A value for a Drawable argument does not name a defined Window or Pixmap.

An  window is used as a Drawable.

SEE ALSO
XCreatePixmap(3X11), XPutImage(3X11)
Xlib - C Language X Interface