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<html>
<head>
<title>Irrlicht Engine Tutorial</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>
<body bgcolor="#FFFFFF" leftmargin="0" topmargin="0" marginwidth="0" marginheight="0">
<br>
<table width="95%" border="0" cellspacing="0" cellpadding="2" align="center">
<tr>
<td bgcolor="#666699" width="10"><b><a href="http://irrlicht.sourceforge.net" target="_blank"><img src="../../media/irrlichtlogo.jpg" width="88" height="31" border="0"></a></b></td>
<td bgcolor="#666699" width="100%">
<div align="center">
<div align="left"><b><font color="#FFFFFF">Tutorial 14. Win32 Window</font></b></div>
</div>
</td>
</tr>
<tr bgcolor="#eeeeff">
<td height="90" colspan="2">
<div align="left">
<p> This example only runs in Windows and demonstrates that Irrlicht can
run inside a win32 window. MFC and .NET Windows.Forms windows are possible
too. </p>
<p>The program which is described here will look like this:</p>
<p align="center"><img src="../../media/014shot.jpg" width="256" height="200"><br>
</p>
</div>
</td>
</tr>
</table>
<br>
<table width="95%" border="0" cellspacing="0" cellpadding="2" align="center">
<tr>
<td bgcolor="#666699"> <b><font color="#FFFFFF">Lets start!</font></b></td>
</tr>
<tr>
<td height="90" bgcolor="#eeeeff" valign="top"> <div align="left">
<div align="left">
<p> In the begining, we create a windows window using the windows API.
I'm not going to explain this code, because it is windows specific.
See the MSDN or a windows book for details.</p>
<table width="95%" border="0" cellspacing="2" cellpadding="0" bgcolor="#CCCCCC" align="center">
<tr>
<td><pre>#include <irrlicht.h>
#include <windows.h> <font color="#006600">// this example only runs with windows</font>
using namespace irr;
#pragma comment(lib, "irrlicht.lib")
HWND hOKButton;
HWND hWnd;
static LRESULT CALLBACK CustomWndProc(HWND hWnd, UINT message,
WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WM_COMMAND:
{
HWND hwndCtl = (HWND)lParam;
int code = HIWORD(wParam);
if (hwndCtl == hOKButton)
{
DestroyWindow(hWnd);
PostQuitMessage(0);
return 0;
}
}
break;
case WM_DESTROY:
PostQuitMessage(0);
return 0;
}
return DefWindowProc(hWnd, message, wParam, lParam);
}
int main()
<font color="#006600">//int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hpre, LPSTR cmd, int cc)</font>
{
HINSTANCE hInstance = 0;
<font color="#006600"> // create dialog</font>
const char* Win32ClassName = "CIrrlichtWindowsTestDialog";
WNDCLASSEX wcex;
wcex.cbSize = sizeof(WNDCLASSEX);
wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc = (WNDPROC)CustomWndProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = DLGWINDOWEXTRA;
wcex.hInstance = hInstance;
wcex.hIcon = NULL;
wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW);
wcex.lpszMenuName = 0;
wcex.lpszClassName = Win32ClassName;
wcex.hIconSm = 0;
RegisterClassEx(&wcex);
DWORD style = WS_SYSMENU | WS_BORDER | WS_CAPTION |
WS_CLIPCHILDREN | WS_CLIPSIBLINGS | WS_MAXIMIZEBOX
| WS_MINIMIZEBOX | WS_SIZEBOX;
int windowWidth = 440;
int windowHeight = 380;
hWnd = CreateWindow( Win32ClassName, "Irrlicht Win32 window example",
style, 100, 100, windowWidth, windowHeight,
NULL, NULL, hInstance, NULL);
RECT clientRect;
GetClientRect(hWnd, &clientRect);
windowWidth = clientRect.right;
windowHeight = clientRect.bottom;
<font color="#006600"> // create ok butt</font>on
hOKButton = CreateWindow(
"BUTTON", "OK - Close", WS_CHILD | WS_VISIBLE | BS_TEXT,
windowWidth - 160, windowHeight - 40, 150, 30, hWnd, NULL,
hInstance, NULL);
<font color="#006600"> // create some text</font>
CreateWindow("STATIC",
"This is Irrlicht running inside a standard Win32 window.\n"\
"Also mixing with MFC and .NET Windows.Forms is possible.",
WS_CHILD | WS_VISIBLE, 20, 20, 400, 40, hWnd, NULL, hInstance, NULL);
<font color="#006600"> // create window to put irrlicht in</font>
HWND hIrrlichtWindow =<br /> CreateWindow("BUTTON", "", WS_CHILD | WS_VISIBLE | BS_OWNERDRAW,
50, 80, 320, 220, hWnd, NULL, hInstance, NULL);
</pre></td>
</tr>
</table>
<p>So now that we have some window, we can create an Irrlicht device
inside of it. We use Irrlicht createEx() function for this. We only
need the handle (HWND) to that window, set it as windowsID parameter
and start up the engine as usual. That's it.</p>
<table width="95%" border="0" cellspacing="2" cellpadding="0" bgcolor="#CCCCCC" align="center">
<tr>
<td><pre><font color="#006600"> // create irrlicht device in the button window</font>
irr::SIrrlichtCreationParameters param;
param.WindowId = reinterpret_cast<s32>(hIrrlichtWindow); // hColorButton
param.DriverType = video::EDT_OPENGL;
irr::IrrlichtDevice* device = irr::createDeviceEx(param);
<font color="#006600"> // setup a simple 3d scene</font>
irr::scene::ISceneManager* smgr = device->getSceneManager();
video::IVideoDriver* driver = device->getVideoDriver();
scene::ICameraSceneNode* cam = smgr->addCameraSceneNode();
cam->setTarget(core::vector3df(0,0,0));
scene::ISceneNodeAnimator* anim =
smgr->createFlyCircleAnimator(core::vector3df(0,10,0), 30.0f);
cam->addAnimator(anim);
anim->drop();
scene::ISceneNode* cube = smgr->addCubeSceneNode(25);
cube->setMaterialFlag(video::EMF_LIGHTING, false);
cube->setMaterialTexture(0, driver->getTexture("../../media/rockwall.bmp"));
smgr->addSkyBoxSceneNode(
driver->getTexture("../../media/irrlicht2_up.jpg"),
driver->getTexture("../../media/irrlicht2_dn.jpg"),
driver->getTexture("../../media/irrlicht2_lf.jpg"),
driver->getTexture("../../media/irrlicht2_rt.jpg"),
driver->getTexture("../../media/irrlicht2_ft.jpg"),
driver->getTexture("../../media/irrlicht2_bk.jpg"));
<font color="#006600"> // show and execute dialog</font>
ShowWindow(hWnd , SW_SHOW);
UpdateWindow(hWnd);
</pre></td>
</tr>
</table>
<p>Now the only thing missing is the drawing loop using IrrlichtDevice::run().
We do this as usual. But instead of this, there is another possibility:
You can also simply use your own message loop using GetMessage, DispatchMessage
and whatever. Calling<br />
Device->run() will cause Irrlicht to dispatch messages internally
too. You need not call Device->run() if you want to do your own
message dispatching loop, but Irrlicht will not be able to fetch user
input then and you have to do it on your own using the window messages,
DirectInput, or whatever.</p>
<table width="95%" border="0" cellspacing="2" cellpadding="0" bgcolor="#CCCCCC" align="center">
<tr>
<td><pre> while (device->run())
{
driver->beginScene(true, true, 0);
smgr->drawAll();
driver->endScene();
}
<font color="#006600"> // the alternative, own message dispatching loop without Device->run() would
// look like this:</font>
<font color="#006600">/*MSG msg;
while (true)
{
if (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
if (msg.message == WM_QUIT)
break;
}
// advance virtual time
device->getTimer()->tick();
// draw engine picture
driver->beginScene(true, true, 0);
smgr->drawAll();
driver->endScene();
}*/</font>
device->closeDevice();
device->drop();
return 0;
}</pre></td>
</tr>
</table>
<p> That's it, Irrlicht now runs in your own windows window.</p>
</div>
</div>
</td>
</tr>
</table>
<p> </p>
</body>
</html>
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