Filter valid hexadecimal color codes Post: 303045965

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xcmsstoreca

XcmsStoreColor()														  XcmsStoreColor()

Name
  XcmsStoreColor - store a specified color into a read/write colormap cell.

Synopsis
  Status XcmsStoreColor(display, colormap, color)
	Display *display;
	Colormap colormap;
	XcmsColor *color;

Arguments
  display   Specifies the connection to the X server.

  colormap  Specifies the colormap.

  color     Specifies the color cell and the color to store.  Values specified in this XcmsColor structure remain unchanged upon return.

Returns
  Zero on failure, non-zero on success.

Availability
  Release 5 and later.

Description
  XcmsStoreColor()  converts the color specified in the XcmsColor structure into RGB values and then uses this RGB specification in an XColor
  structure, whose three flags (DoRed, DoGreen, and DoBlue) are set, in a call to XStoreColor() to change the color  cell  specified  by  the
  pixel  member  of the XcmsColor structure.  This pixel value must be a valid index for the specified colormap, and the color cell specified
  by the pixel value must be a read/write cell.  If the pixel value is not a valid index, a BadValue error results.  If  the  color  cell  is
  unallocated or is allocated read-only, a BadAccess error results.  If the colormap is an installed map for its screen, the changes are vis-
  ible immediately.

  Note that XStoreColor() does not return a Status therefore this function's return status can only indicate if a color conversion  was  suc-
  cessful and the call to XStoreColor() was made.  XcmsStoreColor() returns XcmsSuccess if it succeeded in converting the color specification
  and called XStoreColor().  It returns XcmsSuccessWithCompression if it converted the requested device-independent color to the  device  RGB
  color  space	with gamut compression and completed the call to XStoreColor().  It returns XcmsFailure if it could not convert the specified
  color at all.  To obtain the actual color stored, use XcmsQueryColor().  Due to the screen's hardware limitations or gamut compression, the
  color stored in the colormap may not be identical to the color specified.

Errors
  BadAccess The specified colormap cell was read-only.

  BadColor  The colormap argument does not name a defined colormap.

  BadValue  The specified pixel does not represent a valid color cell in the specified colormap.

Structures
  The XcmsColor structure and XcmsColorFormat type are shown on the XcmsColor reference page.

See Also
  XcmsAllocColor(),  XcmsAllocNamedColor(),  XcmsLookupColor(),  XcmsQueryColor(), XcmsQueryColors(), XcmsStoreColors(), XcmsStoreNamedColor,
  XAllocColor(), XAllocNamedColor(), XLookupColor(), XParseColor(), XQueryColor(), XQueryColors(), XStoreColor(), XStoreColors().

Xlib - Device-independent Color 												  XcmsStoreColor()