SDL_CreateWindow函数：

用此函数在指定的位置，指定窗口大小，以及相应标志来创建窗口。

定义：

SDL_Window* SDL_CreateWindow(const char* title,
                             int         x,
                             int         y,
                             int         w,
                             int         h,
                             Uint32      flags)

函数参数：

title	the title of the window, in UTF-8 encoding
x	the x position of the window, SDL_WINDOWPOS_CENTERED, or SDL_WINDOWPOS_UNDEFINED
y	the y position of the window, SDL_WINDOWPOS_CENTERED, or SDL_WINDOWPOS_UNDEFINED
w	the width of the window, in screen coordinates
h	the height of the window, in screen coordinates
flags	0, or one or more SDL_WindowFlags OR'd together; see Remarks for details

例子：

#include "SDL.h"
#include <stdio.h>

int main(int argc, char* argv[]) {

    SDL_Window *window;                    // Declare a pointer

    SDL_Init(SDL_INIT_VIDEO);              // Initialize SDL2

    // Create an application window with the following settings:
    window = SDL_CreateWindow(
        "An SDL2 window",                  // window title
        SDL_WINDOWPOS_UNDEFINED,           // initial x position
        SDL_WINDOWPOS_UNDEFINED,           // initial y position
        640,                               // width, in pixels
        480,                               // height, in pixels
        SDL_WINDOW_OPENGL                  // flags - see below
    );

    // Check that the window was successfully created
    if (window == NULL) {
        // In the case that the window could not be made...
        printf("Could not create window: %s\n", SDL_GetError());
        return 1;
    }

    // The window is open: could enter program loop here (see SDL_PollEvent())

    SDL_Delay(3000);  // Pause execution for 3000 milliseconds, for example

    // Close and destroy the window
    SDL_DestroyWindow(window);

    // Clean up
    SDL_Quit();
    return 0;
}

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