如何在SDL 2.0中绘制矩形轮廓

Question

我试图在SDL 2.0中绘制矩形轮廓，以用作选择框。有谁知道如何在SDL 2.0中制作一个？

Answer 1

您正在寻找SDL_RenderDrawRect：

int SDL_RenderDrawRect(SDL_Renderer*   renderer,
                   const SDL_Rect* rect);

典型用法是：

SDL_Rect rectToDraw = {100,100,100,100} // Just some random rect

//Set Color of Rect with SDL_SetRenderDrawColor if needed

SDL_RenderDrawRect(renderer, &rectToDraw);

要绘制填充的矩形，将使用SDL_RenderFillRect