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SDL_GetDisplayDPI
Use this function to get the dots/pixels-per-inch for a display.
Contents
Syntax
int SDL_GetDisplayDPI(int displayIndex,
float* ddpi,
float* hdpi,
float* vdpi)
Function Parameters
displayIndex |
the index of the display from which DPI information should be queried |
ddpi |
a pointer filled in with the diagonal DPI of the display; may be NULL |
hdpi |
a pointer filled in with the horizontal DPI of the display; may be NULL |
vdpi |
a pointer filled in with the vertical DPI of the display; may be NULL |
Return Value
Returns 0 on success or a negative error code on failure; call SDL_GetError() for more information.
Code Examples
You can add your code example here
Remarks
Diagonal, horizontal and vertical DPI can all be optionally returned if the parameter is non-NULL.
A failure of this function usually means that either no DPI information is available or the displayIndex is out of range.
Version
This function is available since SDL 2.0.4.
