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Package: xv

The "xv" Package

These routines are meant to provide a convenience interface for querying X visuals.

Library: karmaX11
Link With: -lkarmaX11

Functions

xv_get_vinfos	Get supported visuals available on a screen.
xv_get_visuals	Get supported visuals available on a screen.
xv_get_visinfo_for_visual	Get the visual information structure for a visual.
xv_get_visinfo_for_visual2	Get the visual information structure for a visual.

Functions

void xv_get_vinfos (Screen *screen, XVisualInfo **pseudocolour, XVisualInfo **truecolour, XVisualInfo **directcolour)

Get supported visuals available on a screen.

Parameters:

screen : The X Window screen.
pseudocolour : A PseudoColour XVisualInfo pointer will be written here. If this is NULL, nothing is written here. If no PseudoColour visual is supported, NULL is written here.
truecolour : A TrueColour XVisualInfo pointer will be written here. If this is NULL, nothing is written here. If no TrueColour visual is supported, NULL is written here.
directcolour : A DirectColour XVisualInfo pointer will be written here. If this is NULL, nothing is written here. If no DirectColour visual is supported, NULL is written here.

Returns: Nothing.
Multithreading Level: Unsafe
Note:

The XVisualInfo structures returned must be freed by XFree()

void xv_get_visuals (Screen *screen, Visual **pseudocolour, Visual **truecolour, Visual **directcolour)

Get supported visuals available on a screen.

Parameters:

screen : The X Window screen.
pseudocolour : A PseudoColour XVisualInfo pointer will be written here. If this is NULL, nothing is written here. If no PseudoColour visual is supported, NULL is written here.
truecolour : A TrueColour XVisualInfo pointer will be written here. If this is NULL, nothing is written here. If no TrueColour visual is supported, NULL is written here.
directcolour : A DirectColour XVisualInfo pointer will be written here. If this is NULL, nothing is written here. If no DirectColour visual is supported, NULL is written here.

Returns: Nothing.
Multithreading Level: Unsafe
Note:

The XVisualInfo structures returned must be freed by XFree()

XVisualInfo * xv_get_visinfo_for_visual (Display *dpy, Visual *visual)

Get the visual information structure for a visual.

Parameters:

dpy : The X display.
visual : The visual.

Returns: A pointer to an XVisualInfo structure on succes, else NULL. The XVisualInfo structure must be freed by XFree()
Multithreading Level: Unsafe

void xv_get_visinfo_for_visual2 (Display *dpy, Visual *visual, XVisualInfo *vinfo)

Get the visual information structure for a visual.

Parameters:

dpy : The X display.
visual : The visual.
vinfo : The visual information is written here.

Returns: Nothing.
Multithreading Level: Unsafe

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