{
case WM_PAINT:
hDC = BeginPaint( hwnd, &paintStruct );
EndPaint( hwnd, &paintStruct );
break;
case WM_DESTROY:
PostQuitMessage( 0 );
break;
default:
return DefWindowProc( hwnd, message, wParam, lParam );
}
return 0;
}
窗口过程函数返回了LRESULT类型，运用了CALLBACK类型。函数本身可以被随意命名，我们在这里采用WndProc。
代码讲解之四：完整的源代码
将以上几个部分的讲解串联起来，加之细节上的修改，就得到了Blank Win32 Window Demo的完整源代码：
cpp]
#include
//函数声明
LRESULTCALLBACK WndProc( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam );
//****wWinMain函数，程序入口点函数**************************************
intWINAPI wWinMain( HINSTANCE hInstance, HINSTANCE prevInstance, LPWSTR cmdLine,int cmdShow )
{
UNREFERENCED_PARAMETER( prevInstance );
UNREFERENCED_PARAMETER( cmdLine );
WNDCLASSEX wndClass = { 0 };
wndClass.cbSize = sizeof( WNDCLASSEX ) ;
wndClass.style = CS_HREDRAW | CS_VREDRAW;
wndClass.lpfnWndProc = WndProc;
wndClass.hInstance = hInstance;
wndClass.hCursor = LoadCursor( NULL, IDC_ARROW);
wndClass.hbrBackground = ( HBRUSH )(COLOR_WINDOW + 1 );
wndClass.lpszMenuName = NULL;
wndClass.lpszClassName = "DIRECTX11BookWindowClass";
if( !RegisterClassEx( &wndClass ) )
return -1;
RECT rc = { 0, 0, 640, 480 };
AdjustWindowRect( &rc,WS_OVERLAPPEDWINDOW, FALSE );
HWND hwnd = CreateWindowA( "DIRECTX11BookWindowClass","Blank Win32 Window",
WS_OVERLAPPEDWINDOW, CW_USEDEFAULT,CW_USEDEFAULT, rc.right - rc.left,
rc.bottom - rc.top, NULL, NULL,hInstance, NULL );
if( !hwnd )
return -1;
ShowWindow( hwnd, cmdShow );
// 初始化
MSG msg = { 0 };
while( msg.message != WM_QUIT )
{
if( PeekMessage( &msg, 0, 0, 0,PM_REMOVE ) )
{
TranslateMessage( &msg );
DispatchMessage( &msg );
}
else
{
// 进行更新
// 进行绘图操作
}
}
// 收尾工作
return static_cast( msg.wParam);
}
//****消息处理函数***********************************
LRESULTCALLBACK WndProc( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam )
{
PAINTSTRUCT paintStruct;
HDC hDC;
switch( message )
{
case WM_PAINT:
hDC = BeginPaint( hwnd,&paintStruct );
EndPaint( hwnd, &paintStruct);
break;
case WM_DESTROY:
PostQuitMessage( 0 );
break;
default:
return DefWindowProc( hwnd,message, wParam, lParam );
}
return 0;
}
#include
//函数声明
LRESULTCALLBACK WndProc( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam );
//****wWinMain函数，程序入口点函数**************************************
intWINAPI wWinMain( HINSTANCE hInstance, HINSTANCE prevInstance, LPWSTR cmdLine,int cmdShow )
{
UNREFERENCED_PARAMETER( prevInstance );
UNREFERENCED_PARAMETER( cmdLine );
WNDCLASSEX wndClass = { 0 };
wndClass.cbSize = sizeof( WNDCLASSEX ) ;
wndClass.style = CS_HREDRAW | CS_VREDRAW;
wndClass.lpfnWndProc = WndProc;
wndClass.hInstance = hInstance;
wndClass.hCursor = LoadCursor( NULL, IDC_ARROW);
wndClass.hbrBackground = ( HBRUSH )(COLOR_WINDOW + 1 );
wndClass.lpszMenuName = NULL;
wndClass.lpszClassName = "DIRECTX11BookWindowClass";
if( !Registe