TTF_SetFontSizeDPI(3)

✨ TTF_SetFontSizeDPI ✨

okay bestie so we're in the SDL_ttf3 functions era and today's main character is TTF_SetFontSizeDPI — she sets your font size dynamically, but with target resolutions in dots per inch. dpi-aware font sizing, we love to see it 💅

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📁 HEADER FILE

She lives in SDL3_ttf/SDL_ttf.h — defined there, no cap.

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📜 SYNOPSIS

#include "SDL3_ttf/SDL_ttf.h"

bool TTF_SetFontSizeDPI(TTF_Font *font, float ptsize, int hdpi, int vdpi);

look at her. three ints, one float, one bool. iconic honestly 🎀

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💖 DESCRIPTION

So here's the tea: this one updates any TTF_Text objects that are using this font, and it clears already-generated glyphs from the cache, if there are any. glowy fresh start energy ✨

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🎛️ FUNCTION PARAMETERS

• font — the font you wanna resize, queen 👑
• ptsize — the new point size, freshly picked
• hdpi — the target horizontal DPI
• vdpi — the target vertical DPI

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🫶 RETURN VALUE

Returns true when it ate and false when it did NOT eat 💀 — and if it's false, go call SDL_GetError() for more info, she'll tell you what went wrong.

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🧵 THREAD SAFETY

Lowkey important: call this function on the thread that created the font. don't be out here cross-threading, it's giving chaos 😭

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🌈 AVAILABILITY

Been here since SDL_ttf 3.0.0 — a certified day-one legend ⭐

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👀 SEE ALSO

• •(3)
• TTF_GetFontSize(3)
• •(3)
• TTF_GetFontSizeDPI(3)

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and that's the whole page bestie, every last detail intact, no crumbs left behind 🍓💜 this was SDL_ttf 3.2.2 doing the absolute most, mwah, go resize something pretty 💖✨