《Visual C++游戏设计入门》一书范例程序

// canvasFrame.cpp : implementation file // #include "stdafx.h" #include "canvasr.h" #include "canvasFrame.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif #define ID_LIST 1000 ///////////////////////////////////////////////////////////////////////////// // canvasFrame IMPLEMENT_DYNCREATE(canvasFrame, CFrameWnd) canvasFrame::canvasFrame() { RECT rect; Create(NULL,"绘图窗口"); CClientDC dc(this); int width = dc.GetDeviceCaps(HORZRES); int height = dc.GetDeviceCaps(VERTRES); GetWindowRect( &rect ); width = ( width - ( rect.right - rect.left ))/2 ; height = (height - (rect.bottom - rect.top ))/2 ; MoveWindow( width , height , (rect.right - rect.left ) , (rect.bottom - rect.top ) ,true); mdc = new CDC; //建立一暂存DC对象 bitmap = new CBitmap; //建立CBitmap位图对象 bitmap->m_hObject = (HBITMAP)::LoadImage(NULL,"ball.bmp",IMAGE_BITMAP,198,113,LR_LOADFROMFILE); //加载原始位图文件 mdc->CreateCompatibleDC(&dc); //将mdc转换成与dc相容的DC mdc->SelectObject(bitmap); //选择位图对象到mdc中 } canvasFrame::~canvasFrame() { if(mdc) delete mdc; //释放资源 if(bitmap) delete bitmap; //释放资源 } void canvasFrame::OnSelChange() { CClientDC dc(this); //取得操作窗口DC Draw(&dc); //执行重绘函数 } BEGIN_MESSAGE_MAP(canvasFrame, CFrameWnd) //{{AFX_MSG_MAP(canvasFrame) ON_WM_CREATE() ON_WM_PAINT() ON_LBN_SELCHANGE(ID_LIST,OnSelChange) //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // canvasFrame message handlers int canvasFrame::OnCreate(LPCREATESTRUCT lpCreateStruct) { if (CFrameWnd::OnCreate(lpCreateStruct) == -1) return -1; listbox = new CListBox; listbox->CreateEx(WS_EX_CLIENTEDGE,"ListBox",NULL,LBS_STANDARD|WS_VISIBLE|WS_CHILD,CRect(10,50,180,300),this,ID_LIST); //ミ CListBox ン CString item[15] = {"BLACKNESS","DSTINVERT","MERGECOPY","MERGEPAINT","NOTSRCCOPY","NOTSRCERASE","PATCOPY","PATINVERT","PATPAINT","SRCAND","SRCCOPY","SRCERASE","SRCINVERT","SRCPAINT","WHITENESS"}; //建立CListBox对象 DWORD raster[15] = { BLACKNESS , DSTINVERT , MERGECOPY , MERGEPAINT , NOTSRCCOPY , NOTSRCERASE , PATCOPY , PATINVERT , PATPAINT , SRCAND , SRCCOPY , SRCERASE , SRCINVERT , SRCPAINT , WHITENESS }; //选项的数据 int index; for(int i=0;i<=14;i++) { index = listbox->AddString(item[i]); //加入各个选项 listbox->SetItemData(index,raster[i]); //设定各个选项的数据值 } listbox->SelectString(10,"SRCCOPY"); //设定默认选项 return 0; } void canvasFrame::OnPaint() { CPaintDC dc(this); // device context for painting Draw(&dc); //执行重绘函数 } void canvasFrame::Draw(CDC *dc) { DWORD raster ; int index; index = listbox->GetCurSel(); //选得选项索引值 raster = listbox->GetItemData(index); //依索引值取得选项数据值 dc->BitBlt(210,50,198,113,mdc,0,0,SRCCOPY); //贴上源位图 dc->TextOut(10,10,"Raster 运算值："); dc->TextOut(210,10,"源位图："); dc->TextOut(210,173,"经Raster 运算后的位图："); dc->BitBlt(210,213,198,113,mdc,0,0,raster);//贴上Raster 运算后的位图 }