#include <vector>
#include <windows.h>
#include <wininet.h>    
#pragma comment( lib, "Wininet.lib" )
#include <fstream>
#include "DxLib.h"

int Key[256];
int GetHitKeyStateAll_2(int KeyStateBuf[]){
	char GetHitKeyStateAll_Key[256];
	GetHitKeyStateAll( GetHitKeyStateAll_Key );
	for(int i=0;i<256;i++){
		if(GetHitKeyStateAll_Key[i]==1) KeyStateBuf[i]++;
		else                            KeyStateBuf[i]=0;
	}
	return(0);
}

void GetHttpFile()
{
	HINTERNET hInternet;
	HINTERNET hFile;

	// WININET初期化
	hInternet = InternetOpen(
		"WININET Sample Program",
		INTERNET_OPEN_TYPE_PRECONFIG,
		NULL,
		NULL,
		0);

	// URLのオープン
	hFile = InternetOpenUrl(
		hInternet,
		"http://blog-imgs-45.fc2.com/r/u/d/rudora7/reiton_and_gyakusai.jpg",
		NULL,
		0,
		INTERNET_FLAG_RELOAD,
		0);

	DWORD t_ReadSize = 1000;//1000バイトずつ読み込む
	DWORD t_VecNum = 0;//書き込み位置(t_FileBufVecの添え字)
	std::vector< char > t_FileBufVec;//バッファ

	for(;;) {
		//読み込む分だけ拡張
		t_FileBufVec.resize( t_FileBufVec.size() + t_ReadSize );

		//インターネット上のファイル読み込み
		BOOL t_Result = InternetReadFile( hFile, &t_FileBufVec[ t_VecNum ], t_ReadSize, &t_ReadSize );

		//ファイルの終端に達した場合
		if( t_Result && ( t_ReadSize == 0 ) ){ 
			break;
		}
		t_VecNum += t_ReadSize;
	}

	//ファイルを書き込み
	std::ofstream ofs( "SampleGraphic.jpg", std::ios::binary );
	ofs.write( &t_FileBufVec[ 0 ], t_FileBufVec.size() );

	//ハンドルをクローズ
	InternetCloseHandle(hFile);
	InternetCloseHandle(hInternet);
}

int WINAPI WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance,LPSTR lpCmdLine, int nCmdShow ){
	ChangeWindowMode( TRUE );

	if(DxLib_Init() == -1 ) return -1;
	SetDrawScreen( DX_SCREEN_BACK );
	SetGraphMode(1024, 768, 32);
	SetWindowPosition( 100, -24 );
	SetBackgroundColor(0,0,70);
	GetHttpFile();
	
	int GrHandle = LoadGraph( "SampleGraphic.jpg" ) ;

	while(ProcessMessage()==0 && ClearDrawScreen()==0 ){//&& GetHitKeyStateAll_2(Key)==0){	
		DrawGraph( 0, 0, GrHandle, TRUE );
		ScreenFlip();
	}
	DxLib_End();
	return 0;
}