WINDOWS CE下简单计算器的设计

// 该程序为子窗口的各种处理子过程，主要是消息处理过程，是实现子窗口功能自定义的过程 // 包括自定义头文件 #include "myCalculator.h" // 外部定义的全局变量引用 extern HINSTANCE hInst; HBITMAP hBitmap; double arr[3]; int nSelected; int i=0; int m=0; double temp[1]={0}; // 定义全局消息ID号与子窗口消息处理过程指针查找表 const MessageProc calculatorMessages[]={ WM_CREATE, goCreateCalculatorWnd, WM_PAINT, goPaintCalculatorWnd, WM_CTLCOLORSTATIC,goCtlcolorCalculatorWnd, WM_CTLCOLORBTN, goCtlcolorCalculatorWnd, WM_COMMAND, goCommandCalculatorWnd, }; // 定义七个控件窗口的创建属性 CONTROLSTRUCT controlWnd[]={ {TEXT(""),IDC_EDITDATA,TEXT("EDIT"),ES_RIGHT | WS_BORDER ,60,30,150,25}, {TEXT("7"),IDC_SEVEN,TEXT("BUTTON"),BS_PUSHBUTTON,60,60,30,30}, {TEXT("8"),IDC_EIGHT,TEXT("BUTTON"),BS_PUSHBUTTON,100,60,30,30}, {TEXT("9"),IDC_NINE,TEXT("BUTTON"),BS_PUSHBUTTON,140,60,30,30}, {TEXT("4"),IDC_FOUR,TEXT("BUTTON"),BS_PUSHBUTTON,60,100,30,30}, {TEXT("5"),IDC_FIVE,TEXT("BUTTON"),BS_PUSHBUTTON,100,100,30,30}, {TEXT("6"),IDC_SIX,TEXT("BUTTON"),BS_PUSHBUTTON,140,100,30,30}, {TEXT("1"),IDC_ONE,TEXT("BUTTON"),BS_PUSHBUTTON ,60,140,30,30}, {TEXT("2"),IDC_TWO,TEXT("BUTTON"),BS_PUSHBUTTON,100,140,30,30}, {TEXT("3"),IDC_THREE,TEXT("BUTTON"),BS_PUSHBUTTON,140,140,30,30}, {TEXT("0"),IDC_ZERO,TEXT("BUTTON"),BS_PUSHBUTTON,60,180,30,30}, {TEXT("+"),IDC_PLUS,TEXT("BUTTON"),BS_PUSHBUTTON,180,180,30,30}, {TEXT("-"),IDC_MINUS,TEXT("BUTTON"),BS_PUSHBUTTON,180,140,30,30}, {TEXT("*"),IDC_MULTIPLY,TEXT("BUTTON"),BS_PUSHBUTTON,180,100,30,30}, {TEXT("/"),IDC_DIVIDE,TEXT("BUTTON"),BS_PUSHBUTTON,180,60,30,30}, {TEXT("c"),IDC_CLEAR,TEXT("BUTTON"),BS_PUSHBUTTON,100,180,30,30}, {TEXT(" = "),IDC_PUSHBTN,TEXT("BUTTON"),BS_PUSHBUTTON,140,180,30,30}, }; // 注册子窗口类 int registerCalculator(HINSTANCE hInstance) { // 定义窗口类结构体对象 WNDCLASS wc; // 填充结构体中的各元素 wc.hInstance = hInstance; wc.lpszClassName = strSinChildClassName; wc.lpfnWndProc = calculatorWndProc; wc.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH); wc.style = CS_DBLCLKS; wc.hIcon = NULL; wc.hCursor = NULL; wc.lpszMenuName = NULL; wc.cbClsExtra = 0; wc.cbWndExtra = 0; // 注册窗口类 if(!RegisterClass(&wc)) return 0; return 1; } // 子窗口过程体，必须为回调函数，当窗口收到消息后，会告知Windows CE系统执行对应的消息处理过程 LRESULT CALLBACK calculatorWndProc(HWND hWnd, UINT msgCode, WPARAM wParam, LPARAM lParam) { INT i; // 查找对应的消息ID号，并执行相应的消息处理过程 for(i=0; i < dim(calculatorMessages); i++) { if(msgCode == calculatorMessages[i].uCode) return (*calculatorMessages[i].functionName)(hWnd, msgCode, wParam, lParam); } // 对于不在消息查找表中的消息，调用Windows CE的缺省窗口过程 return DefWindowProc(hWnd, msgCode, wParam, lParam); } // 子窗口收到WM_CREATE消息后的处理过程体 LRESULT goCreateCalculatorWnd(HWND hWnd, UINT msgCode, WPARAM wParam, LPARAM lParam) { int i; if(hBitmap==0) { hBitmap = (HBITMAP)LoadImage(hInst,MAKEINTRESOURCE(ID_BITMAP),IMAGE_BITMAP,0,0,0); } // 在子窗口中创建八个控件 for(i=0;i<dim(controlWnd);i++) { CreateWindow(controlWnd[i].szClass,controlWnd[i].szTitle, controlWnd[i].dwStyle | WS_VISIBLE | WS_CHILD, controlWnd[i].x,controlWnd[i].y, controlWnd[i].xw,controlWnd[i].yh, hWnd,(HMENU)controlWnd[i].nID,hInst,NULL); } // 选中单选钮组中的第一个 //CheckRadioButton(hWnd,IDC_PLUS,IDC_MINUS,IDC_MULTIPLY, IDC_DIVIDE); return 0; } // 子窗口收到WM_PAINT消息后的处理过程体 LRESULT goPaintCalculatorWnd(HWND hWnd, UINT msgCode, WPARAM wParam, LPARAM lParam) { // 定义画板结构体对象 PAINTSTRUCT ps; // 定义矩形结构体对象 RECT rect; BITMAP bmp; HBRUSH hOldBrush; // 定义设备环境句柄（或称设备上下文，一般指触摸屏）和内存映像设备 HDC hdc,hdcMem; // 获得客户区矩形大小 GetClientRect(hWnd,&rect); // 获得设备环境，必须与EndPaint配对使用 hdc=BeginPaint(hWnd,&ps); hdcMem = CreateCompatibleDC(hdc); hOldBrush = (HBRUSH)SelectObject(hdcMem,hBitmap); GetObject(hBitmap,sizeof(BITMAP),&bmp); BitBlt(hdc,rect.left,rect.top,bmp.bmWidth,bmp.bmHeight,hdcMem,0,0,SRCCOPY); SelectObject(hdcMem,hOldBrush); DeleteDC(hdcMem); SetBkMode(hdc,TRANSPARENT); // 释放设备环境资源 EndPaint(hWnd,&ps); return 0; } // 控件显示前引发的消息WM_CTLCOLORxx，处理该消息可以改变控件的显示样式，如背景色和字体等 LRESULT goCtlcolorCalculatorWnd(HWND hWnd, UINT msgCode, WPARAM wParam, LPARAM lParam) { // 设置控件为透明背景 SetBkMode(HDC(wParam),TRANSPARENT); // 提取出控件的ID号，为对应的控件背景着色，按钮着金黄色，其他为白色 switch(GetDlgCtrlID((HWND)lParam)) { case IDC_PLUS: return (LRESULT)CreateSolidBrush(RGB(200,200,70)); return 0; break; case IDC_MINUS: return (LRESULT)CreateSolidBrush(RGB(200,200,70)); return 0; break; case IDC_MULTIPLY: return (LRESULT)CreateSolidBrush(RGB(200,200,70)); return 0; break; case IDC_DIVIDE: return (LRESULT)CreateSolidBrush(RGB(200,200,70)); return 0; break; case IDC_PUSHBTN: return (LRESULT)CreateSolidBrush(RGB(200,200,70)); return 0; break; case IDC_EDITDATA: case IDC_CLEAR: return (LRESULT)CreateSolidBrush(RGB(200,200,70)); return 0; break; case IDC_ONE: return (LRESULT)CreateSolidBrush(RGB(200,200,70)); return 0; break; case IDC_TWO: return (LRESULT)CreateSolidBrush(RGB(200,200,70)); return 0; break; case IDC_THREE: return (LRESULT)CreateSolidBrush(RGB(200,200,70)); return 0; break; case IDC_FOUR: return (LRESULT)CreateSolidBrush(RGB(200,200,70)); return 0; break; case IDC_FIVE: return (LRESULT)CreateSolidBrush(RGB(200,200,70)); return 0; break; case IDC_SIX: return (LRESULT)CreateSolidBrush(RGB(200,200,70)); return 0; break; case IDC_SEVEN: return (LRESULT)CreateSolidBrush(RGB(200,200,70)); return 0; break; case IDC_EIGHT: return (LRESULT)CreateSolidBrush(RGB(200,200,70)); return 0; break; case IDC_NINE: return (LRESULT)CreateSolidBrush(RGB(200,200,70)); return 0; break; case IDC_ZERO: return (LRESULT)CreateSolidBrush(RGB(200,200,70)); return 0; break; default: return 0; break; } } // 子窗口收到点击控件引发的WM_COMMAND消息后的处理过程体 LRESULT goCommandCalculatorWnd(HWND hWnd, UINT msgCode, WPARAM wParam, LPARAM lParam) { // 定义字符串，保存计算结果 TCHAR szOut[128]; // 定义字符串变量 TCHAR szEdit[64],*stopStr; /*if(GetDlgItemText(hWnd,IDC_EDITDATA,szEdit,sizeof(szEdit))!=0) a=wcstod(szEdit,&stopStr);*/ // LOWORD(wParam)为控件ID号，据此识别被按下去的控件 switch(LOWORD(wParam)) { case IDC_PUSHBTN: if(i==1){ GetDlgItemText(hWnd,IDC_EDITDATA,szEdit,sizeof(szEdit)); arr[0]=wcstod(szEdit,&stopStr); arr[2]=calculator(nSelected,arr[0],arr[1]); wsprintf(szOut,TEXT("%.5lf"),arr[2]); // 把计算结果显示在EDIT控件IDC_EDITRESULT中 SendDlgItemMessage(hWnd,IDC_EDITDATA,WM_SETTEXT,(WPARAM)0,(LPARAM)szOut); i=0; } else{ //GetDlgItemText(hWnd,IDC_EDITDATA,szEdit,sizeof(szEdit)); //arr[1]=wcstod(szEdit,&stopStr); //wsprintf(szOut,TEXT("%.5lf"),arr[1]); //// 把计算结果显示在EDIT控件IDC_EDITRESULT中 //SendDlgItemMessage(hWnd,IDC_EDITDATA,WM_SETTEXT,(WPARAM)0,(LPARAM)szOut); } break; case IDC_PLUS: //GetDlgItemText(hWnd,IDC_EDITDATA,szEdit,sizeof(szEdit)); //x=wcstod(szEdit,&stopStr); nSelected= 1; i=1; m=0; temp[0]=0; GetDlgItemText(hWnd,IDC_EDITDATA,szEdit,sizeof(szEdit)); arr[0]=wcstod(szEdit,&stopStr); if(arr[0]!=0){ arr[1]=arr[0]; SetDlgItemText(hWnd,IDC_EDITDATA,NULL); } break; case IDC_MINUS: nSelected= 2; i=1; m=0; temp[0]=0; GetDlgItemText(hWnd,IDC_EDITDATA,szEdit,sizeof(szEdit)); arr[0]=wcstod(szEdit,&stopStr); if(arr[0]!=0){ arr[1]=arr[0]; SetDlgItemText(hWnd,IDC_EDITDATA,NULL); } break; case IDC_MULTIPLY: nSelected= 3; i=1; m=0; temp[0]=0; GetDlgItemText(hWnd,IDC_EDITDATA,szEdit,sizeof(szEdit)); arr[0]=wcstod(szEdit,&stopStr); if(arr[0]!=0){ arr[1]=arr[0]; SetDlgItemText(hWnd,IDC_EDITDATA,NULL); } break; case IDC_DIVIDE: nSelected= 4; i=1; m=0; temp[0]=0; Ge