Provided by: libx11-doc_1.4.99.1-0ubuntu2_all bug


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


       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 long bg, unsigned int

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


       bitmap    Specifies the bitmap.

                 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.

                 Returns the bitmap data.

       depth     Specifies the depth of the pixmap.

       display   Specifies the connection to the X server.

       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

       height    Specify the width and height.

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

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

                 Return the hotspot coordinates.


       The XReadBitmapFile 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, XReadBitmapFile returns
       BitmapOpenFailed.  If the file can be opened but does not contain valid bitmap data, it
       returns BitmapFileInvalid.  If insufficient working storage is allocated, it returns
       BitmapNoMemory.  If the file is readable and valid, it returns BitmapSuccess.

       XReadBitmapFile 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 XFreePixmap when finished.  If
       name_x_hot and name_y_hot exist, XReadBitmapFile returns them to x_hot_return and
       y_hot_return; otherwise, it returns -1,-1.

       XReadBitmapFile can generate BadAlloc and BadDrawable errors.

       The XReadBitmapFileData function reads in a file containing a bitmap, in the same manner
       as XReadBitmapFile, 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 XFree.  The status and other return values are the same
       as for XReadBitmapFile.

       The XWriteBitmapFile 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 BitmapOpenFailed.  If insufficient memory is allocated,
       XWriteBitmapFile returns BitmapNoMemory; otherwise, on no error, it returns BitmapSuccess.
       If x_hot and y_hot are not -1, -1, XWriteBitmapFile writes them out as the hotspot
       coordinates for the bitmap.

       XWriteBitmapFile can generate BadDrawable and BadMatch errors.

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

       XCreatePixmapFromBitmapData can generate BadAlloc and BadMatch errors.

       The XCreateBitmapFromData function allows you to include in your C program (using
       #include) a bitmap file that was written out by XWriteBitmapFile (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, XCreateBitmapFromData returns None.  It is
       your responsibility to free the bitmap using XFreePixmap when finished.

       XCreateBitmapFromData can generate a BadAlloc error.


       BadAlloc  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.

       BadMatch  An InputOnly window is used as a Drawable.


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