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.TH SDL_GetWindowOpacity 3 "SDL 3.1.0" "SDL" "SDL3 FUNCTIONS"
.SH NAME
SDL_GetWindowOpacity \- Get the opacity of a window\[char46]
.SH SYNOPSIS
.nf
.B #include \(dqSDL3/SDL.h\(dq
.PP
.BI "int SDL_GetWindowOpacity(SDL_Window *window, float *out_opacity);
.fi
.SH DESCRIPTION
If transparency isn't supported on this platform, opacity will be reported
as 1\[char46]0f without error\[char46]

The parameter
.BR opacity
is ignored if it is NULL\[char46]

This function also returns -1 if an invalid window was provided\[char46]

.SH FUNCTION PARAMETERS
.TP
.I window
the window to get the current opacity value from
.TP
.I out_opacity
the float filled in (0\[char46]0f - transparent, 1\[char46]0f - opaque)
.SH RETURN VALUE
Returns 0 on success or a negative error code on failure; call

.BR SDL_GetError
() for more information\[char46]

.SH AVAILABILITY
This function is available since SDL 3\[char46]0\[char46]0\[char46]

.SH SEE ALSO
.BR SDL_SetWindowOpacity (3)