OpenGL(一) 使用Win API 建立黑色窗口

先来创建一个黑色的窗口吧，作为GL的容器。

Light3dWinAPP 这个类来处理窗口的创建和销毁以及分发 系统事件。

/**********************
*File:Light3dWinAPP.h;
*Author:chenpeng
*Data:2015/07/21;
*/

#include<Windows.h>
#include<tchar.h>

namespace Light3d
{
class Light3dWinAPP
{
public :
HINSTANCE m_hInstance; //实例句柄;

HWND m_hWnd; //窗口句柄;

int m_width; //宽度;

int m_height; //高度;

public:
Light3dWinAPP(HINSTANCE hInstance) :m_hInstance(hInstance)
{
//想要建立一个窗口，必须有一个窗口类;
WNDCLASSEX winClass;
//窗口类名;
winClass.lpszClassName = _T("Light3dWinAPP");
winClass.cbSize = sizeof(winClass);

//当H 水平方向，V 竖直方向 大小变化或移动时，重绘窗口，
//为该类中的每一个窗口分配一个唯一的设备上下文;
winClass.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;

//指向函数的长指针lp,处理窗口的消息循环;
winClass.lpfnWndProc = wndProc;

//实例句柄;
winClass.hInstance = hInstance;
//窗口最小化图标;
winClass.hIcon = 0;
winClass.hIconSm = 0;
//鼠标光标;
winClass.hCursor = LoadCursor(hInstance, IDC_ARROW);
//窗口背景色;
winClass.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);
//窗口菜单;
winClass.lpszMenuName = nullptr;
winClass.cbClsExtra = 0;
winClass.cbWndExtra = 0;
RegisterClassEx(&winClass);
}

virtual ~Light3dWinAPP()
{
UnregisterClass(_T("CELLWinAPP"), m_hInstance);
}

protected:
static LRESULT CALLBACK wndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
Light3dWinAPP* pThis = (Light3dWinAPP*)GetWindowLong(hWnd, GWL_USERDATA);
if (pThis)
{
return pThis->onEvent(hWnd, msg, wParam, lParam);
}
if (WM_CREATE == msg)
{
CREATESTRUCT* pCreate = (CREATESTRUCT*)lParam;
SetWindowLong(hWnd, GWL_USERDATA,(DWORD_PTR)pCreate->lpCreateParams);

}
return DefWindowProc(hWnd, msg, wParam, lParam);
}

public:
//窗口事件;
virtual LRESULT onEvent(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch (msg)
{
case WM_CLOSE:
case WM_DESTROY:
{
::PostQuitMessage(0);
}
break;
case WM_MOUSEMOVE:
break;
case WM_LBUTTONDOWN:
break;
case WM_LBUTTONUP:
break;
case WM_RBUTTONDOWN:
break;
case WM_RBUTTONUP:
break;
case WM_KEYDOWN:
{
switch (wParam)
{
case VK_LEFT:
{

}
break;
case VK_RIGHT:
break;
case VK_UP:
break;
default:
break;
}

}
break;
case WM_KEYUP:
break;
default:
return DefWindowProc(hWnd, msg, wParam, lParam);
}

return S_OK;
}

//主函数;
int main(int width, int height)
{
//创建窗口;
m_hWnd = CreateWindowEx(NULL,
_T("Light3dWinAPP"),
_T("Light3D"),
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT,
CW_USEDEFAULT,
width,
height,
NULL,
NULL,
m_hInstance,
this
);

if (m_hWnd == 0)
{
return -1;
}

ShowWindow(m_hWnd, SW_SHOW);
MSG msg = { 0 };
while (msg.message!=WM_QUIT)
{
if (msg.message == WM_DESTROY || msg.message == WM_CLOSE)
{
//跳出，退出;
break;
}

//有消息的时候处理消息，没有消息的时候进行渲染绘制;
if (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
else
{
//渲染;
Sleep(1);
}
}
return 0;
}

};
}
main.cpp 中处理Win的入口函数

/**********************
*File:main.cpp;
*Author:chenpeng
*Data:2015/07/21;
*/

#include "Light3dWinAPP.h"

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

Light3d::Light3dWinAPP app(hInstance);
app.main(800, 600);
}



示例下载：
http://pan.baidu.com/s/1c0EtfR6