Example of using Awesomium r148 API with GDI/WinForms/WinAPI

WinExample.cpp

// WinTest.cpp : Defines the entry point for the application.
//

#include "stdafx.h"
#include "WinTest.h"
#include <Awesomium/WebCore.h>
#include <iostream>

#define MAX_LOADSTRING 100

// Global Variables:
HINSTANCE hInst;								// current instance
TCHAR szTitle[MAX_LOADSTRING];					// The title bar text
TCHAR szWindowClass[MAX_LOADSTRING];			// the main window class name

Awesomium::WebCore* core = 0;
Awesomium::WebView* view;

HDC context;
HBITMAP bitmap;
unsigned char* bitmap_buf = 0;

// Forward declarations of functions included in this code module:
ATOM				MyRegisterClass(HINSTANCE hInstance);
BOOL				InitInstance(HINSTANCE, int);
LRESULT CALLBACK	WndProc(HWND, UINT, WPARAM, LPARAM);
INT_PTR CALLBACK	About(HWND, UINT, WPARAM, LPARAM);

int APIENTRY _tWinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPTSTR    lpCmdLine,
                     int       nCmdShow)
{
	UNREFERENCED_PARAMETER(hPrevInstance);
	UNREFERENCED_PARAMETER(lpCmdLine);

 	// TODO: Place code here.
	MSG msg;
	HACCEL hAccelTable;

	// Initialize global strings
	LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
	LoadString(hInstance, IDC_WINTEST, szWindowClass, MAX_LOADSTRING);
	MyRegisterClass(hInstance);

	// Perform application initialization:
	if (!InitInstance (hInstance, nCmdShow))
	{
		return FALSE;
	}

	hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_WINTEST));

	Awesomium::WebCoreConfig config;
	config.setEnablePlugins(true);
	config.setDisableWinMessagePump(true);
	core = new Awesomium::WebCore(config);
	view = core->createWebView(512, 512);
	view->loadURL("http://www.google.com");
	view->focus();

	BITMAPINFOHEADER bih = {0};
	bih.biSize = sizeof(BITMAPINFOHEADER);
	bih.biBitCount = 32;
	bih.biCompression = BI_RGB;
	bih.biPlanes = 1;
	bih.biWidth = 512;
	bih.biHeight = -(512);
	context = CreateCompatibleDC(0);
	bitmap = CreateDIBSection(context, (BITMAPINFO*)&bih, DIB_RGB_COLORS, (void**)&(bitmap_buf), 0, 0);

	// Main message loop:
	while (GetMessage(&msg, NULL, 0, 0))
	{
		if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
		{
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}
	}

	ReleaseDC(0, context);
	DeleteObject(bitmap);

	delete core;

	return (int) msg.wParam;
}

//
//  FUNCTION: MyRegisterClass()
//
//  PURPOSE: Registers the window class.
//
//  COMMENTS:
//
//    This function and its usage are only necessary if you want this code
//    to be compatible with Win32 systems prior to the 'RegisterClassEx'
//    function that was added to Windows 95. It is important to call this function
//    so that the application will get 'well formed' small icons associated
//    with it.
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{
	WNDCLASSEX wcex;

	wcex.cbSize = sizeof(WNDCLASSEX);

	wcex.style			= CS_HREDRAW | CS_VREDRAW;
	wcex.lpfnWndProc	= WndProc;
	wcex.cbClsExtra		= 0;
	wcex.cbWndExtra		= 0;
	wcex.hInstance		= hInstance;
	wcex.hIcon			= LoadIcon(hInstance, MAKEINTRESOURCE(IDI_WINTEST));
	wcex.hCursor		= LoadCursor(NULL, IDC_ARROW);
	wcex.hbrBackground	= (HBRUSH)(COLOR_WINDOW+1);
	wcex.lpszMenuName	= MAKEINTRESOURCE(IDC_WINTEST);
	wcex.lpszClassName	= szWindowClass;
	wcex.hIconSm		= LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));

	return RegisterClassEx(&wcex);
}

//
//   FUNCTION: InitInstance(HINSTANCE, int)
//
//   PURPOSE: Saves instance handle and creates main window
//
//   COMMENTS:
//
//        In this function, we save the instance handle in a global variable and
//        create and display the main program window.
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
   HWND hWnd;

   hInst = hInstance; // Store instance handle in our global variable

   hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
      CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);

   // Create our WebCore Update timer, renders at a max of 50 FPS
   	UINT myTimer = SetTimer ( hWnd, 0, 20, NULL );

   if (!hWnd)
   {
      return FALSE;
   }

   ShowWindow(hWnd, nCmdShow);
   UpdateWindow(hWnd);

   return TRUE;
}

//
//  FUNCTION: WndProc(HWND, UINT, WPARAM, LPARAM)
//
//  PURPOSE:  Processes messages for the main window.
//
//  WM_COMMAND	- process the application menu
//  WM_PAINT	- Paint the main window
//  WM_DESTROY	- post a quit message and return
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	int wmId, wmEvent;
	PAINTSTRUCT ps;
	HDC hdc;

	switch (message)
	{
	case WM_COMMAND:
		wmId    = LOWORD(wParam);
		wmEvent = HIWORD(wParam);
		// Parse the menu selections:
		switch (wmId)
		{
		case IDM_ABOUT:
			DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About);
			break;
		case IDM_EXIT:
					delete core;
			DestroyWindow(hWnd);
			break;
		default:
			return DefWindowProc(hWnd, message, wParam, lParam);
		}
		break;
	case WM_TIMER:
		{
			if(core)
			{
				core->update();

				if(view->isDirty())
				{
					InvalidateRect (hWnd, NULL, TRUE);
					UpdateWindow (hWnd);
				}
			}

		}
		break;
	case WM_PAINT:
		{
			hdc = BeginPaint(hWnd, &ps);

			if(view) {
				const Awesomium::RenderBuffer* buf = view->render();

				if(buf) {
					memcpy(bitmap_buf, buf->buffer, buf->rowSpan * buf->height);
					SelectObject(context, bitmap);
					BitBlt(hdc, 0, 0, 512, 512, context, 0, 0, SRCCOPY);
					ReleaseDC(hWnd, context);
				}
			}

			EndPaint(hWnd, &ps);
		}
		break;
	case WM_DESTROY:
		PostQuitMessage(0);
		break;
	case WM_MOUSEMOVE:
		{
			if(view)
				view->injectMouseMove(LOWORD(lParam), HIWORD(lParam));
			break;
		}
	case WM_LBUTTONDOWN:
		{
			if(view)
				view->injectMouseDown(Awesomium::LEFT_MOUSE_BTN);
			break;
		}
	case WM_LBUTTONUP:
		{
			if(view)
				view->injectMouseUp(Awesomium::LEFT_MOUSE_BTN);
			break;
		}
	case WM_KEYDOWN:
	case WM_KEYUP:
	case WM_CHAR:
		{
			if(view)
				view->injectKeyboardEvent(Awesomium::WebKeyboardEvent(message, wParam, lParam));
			break;
		}
	case WM_QUIT:

		break;
	default:
		return DefWindowProc(hWnd, message, wParam, lParam);
	}
	return 0;
}

// Message handler for about box.
INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
	UNREFERENCED_PARAMETER(lParam);
	switch (message)
	{
	case WM_INITDIALOG:
		return (INT_PTR)TRUE;

	case WM_COMMAND:
		if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
		{
			EndDialog(hDlg, LOWORD(wParam));
			return (INT_PTR)TRUE;
		}
		break;
	}
	return (INT_PTR)FALSE;
}