#include <stdafx.h>
#include <windows.h>
#include <objidl.h>
#include <gdiplus.h>
#include <iostream>
#include <vector>
#include <cmath>
#include <ctime>

using namespace Gdiplus;

#pragma comment (lib,"Gdiplus.lib")

HWND                hWnd;

LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);

INT WINAPI WinMain(HINSTANCE hInstance, HINSTANCE, PSTR, INT iCmdShow)
{
	MSG                 msg;
	WNDCLASS            wndClass;
	GdiplusStartupInput gdiplusStartupInput;
	ULONG_PTR           gdiplusToken;

	// Initialize GDI+.
	GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);

	wndClass.style = CS_HREDRAW | CS_VREDRAW;
	wndClass.lpfnWndProc = WndProc;
	wndClass.cbClsExtra = 0;
	wndClass.cbWndExtra = 0;
	wndClass.hInstance = hInstance;
	wndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
	wndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
	wndClass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
	wndClass.lpszMenuName = NULL;
	wndClass.lpszClassName = TEXT("GettingStarted");

	RegisterClass(&wndClass);

	hWnd = CreateWindow(
		TEXT("GettingStarted"),   // window class name
		TEXT("Getting Started"),  // window caption
		WS_OVERLAPPEDWINDOW,      // window style
		CW_USEDEFAULT,            // initial x position
		CW_USEDEFAULT,            // initial y position
		CW_USEDEFAULT,            // initial x size
		CW_USEDEFAULT,            // initial y size
		NULL,                     // parent window handle
		NULL,                     // window menu handle
		hInstance,                // program instance handle
		NULL);                    // creation parameters

	ShowWindow(hWnd, iCmdShow);
	UpdateWindow(hWnd);

	while (GetMessage(&msg, NULL, 0, 0))
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}

	GdiplusShutdown(gdiplusToken);
	return msg.wParam;
	srand(time(0));
}  // WinMain

LRESULT CALLBACK WndProc(HWND hWnd, UINT message,
	WPARAM wParam, LPARAM lParam)
{
	PAINTSTRUCT  ps;
	HDC          hdc;

	const int n = 256;
	switch (message)
	{
	case WM_PAINT:


		return 0;
	case WM_DESTROY:
		PostQuitMessage(0);
		return 0;
	case WM_KEYDOWN:		//Собственно массив
		RGBQUAD RGB_n[n * n];
		//В этой структуре хранятся параметры DIB
		tagBITMAPINFO bif;
		ZeroMemory(&bif, sizeof(bif));
		bif.bmiHeader.biSize = sizeof(bif);
		bif.bmiHeader.biWidth = n; //ширина
		bif.bmiHeader.biHeight = -n; //выста (если взять положительную, то рисунок будет перевурнут)
		bif.bmiHeader.biBitCount = 24;//Глубина цвета, поскольку размер структуры RGBQUAD, 3 байта, то глубина цвета 3*8бита
		bif.bmiHeader.biPlanes = 1;

		for (int i = 0; i < n * n; i++) {
			RGB_n[i].rgbBlue = rand() % 256;
			RGB_n[i].rgbGreen = rand() % 256;
			RGB_n[i].rgbRed = rand() % 256;
		}

		tagPAINTSTRUCT ps;

		BeginPaint(hWnd, &ps);

		SetDIBitsToDevice(ps.hdc,
			0, //DestX
			0, //DestY
			n, //Width
			n, //Height
			0, //SrcX
			0, //SrcY
			0, //StartScan
			n, //NumScans
			&RGB_n,//Bits
			&bif, //BitsInfo
			0 //Usage
			);


		InvalidateRect(hWnd, NULL, 0);
		EndPaint(hWnd, &ps);
		return 0;
	default:
		return DefWindowProc(hWnd, message, wParam, lParam);
	}
} // WndProc