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This SDL example shows colors moving, like this screenshot (png).
Operating system: Ubuntu
IDE: Qt Creator 2.0.0
Project type: Qt4 Console Application
Selected required modules: QtCore
Compiler: G++ 4.4.1
Additional libraries: SDL
#-------------------------------------------------
#
# Project created by QtCreator 2010-07-17T14:57:33
#
#-------------------------------------------------
QT += core
QT -= gui
TARGET = CppSdlExample2
CONFIG += console
CONFIG -= app_bundle
TEMPLATE = app
LIBS += -L/usr/local/lib -lSDL
SOURCES += main.cpp
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Source code
#include <cassert>
#include <cstdlib>
#include <SDL/SDL.h>
int main()
{
//Start SDL
if (SDL_Init( SDL_INIT_EVERYTHING ) < 0)
{
assert(!"Should not get here. Initialization failed");
}
//Call SDL_Quit upon exit
std::atexit(SDL_Quit);
//Set up screen
SDL_Surface * const screen = SDL_SetVideoMode( 450, 450, 32, SDL_SWSURFACE );
assert(screen && "Assume screen can be initialized");
//Load image
SDL_Surface * const image = SDL_LoadBMP( "MyImage.bmp");
assert(image && "Assume image is found in same folder as binary");
//Blit image to screen
SDL_BlitSurface( image, 0, screen, 0);
//Update screen
SDL_Flip( screen );
//Wait for user to close window
while (1)
{
SDL_Event event;
SDL_PollEvent(&event);
if (event.type == SDL_QUIT) break;
}
//Free the loaded image
SDL_FreeSurface( image );
}
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