how to embedded sdl window into qt widget

alone777

I'm using SDL 2.0 to show a h.264 video frame. but when create the a new sdl window , the sdl window is shown in a seperate window. I want it to be embedded into my widget.
how ? thanks!
#include <SDL.h>
#include <stdio.h>
#include <stdlib.h>

const int SCREEN_WIDTH = 640;
const int SCREEN_HEIGHT = 480;

int main(int argc, char* args[])
{
//The window we'll be rendering to
SDL_Window* window = NULL;

//The surface contained by the window
SDL_Surface* screenSurface = NULL;

//Initialize SDL
if (SDL_Init(SDL_INIT_VIDEO) < 0)
{
	printf("SDL could not initialize! SDL_Error: %s\n", SDL_GetError());
	return 0;
}

//Create window
window = SDL_CreateWindow("Hello SDL",
	SDL_WINDOWPOS_UNDEFINED,
	SDL_WINDOWPOS_UNDEFINED,
	SCREEN_WIDTH,
	SCREEN_HEIGHT,
	SDL_WINDOW_SHOWN
);
if (window == NULL)
{
	printf("Window could not be created! SDL_Error: %s\n", SDL_GetError());
	return 0;
}

//Get window surface
screenSurface = SDL_GetWindowSurface(window);

//Fill the surface green
SDL_FillRect(screenSurface, NULL, SDL_MapRGB(screenSurface->format, 0x00, 0xff, 0x00));

//Update the surface
SDL_UpdateWindowSurface(window);

//Wait two seconds
SDL_Delay(2000);

//Destroy window
SDL_DestroyWindow(window);

//Quit SDL subsystems
SDL_Quit();

return 1;

}

JKSH

Hi @alone777, and welcome!

Which OS are you on? You could try calling QWindow::fromWinId() followed by QWidget::createWindowContainer(), but be aware this scenario isn't very well-supported.

See https://bugreports.qt.io/browse/QTBUG-40320 for some example code and a list of potential issues.

alone777

@JKSH I'm using Windows 7 SP2， thanks

alone777

@JKSH said in how to embedded sdl window into qt widget:

createWindowContainer

I have resolved this problem using SDL_CreateWindowFrom, thank you for your answer.