用Visual C++编写计算器 源代码

// 计数器.cpp : Defines the entry point for the application. // #include "stdafx.h" #include<windows.h> #include <stdio.h> #include <stdlib.h> #include<string.h> #include"resource.h" HWND hWndhWnd, hEditResult, hButtonOptSum0,hButtonOptSum1,hButtonOptSum2,hButtonOptSum3, hButtonOptSum4,hButtonOptSum5,hButtonOptSum6,hButtonOptSum7, hButtonOptSum8,hButtonOptSum9,hButtonOptSumDec, hButtonOptAdd,hButtonOptSub,hButtonOptMul,hButtonOptDiv, hButtonOptSqrt, hButtonOptPercent,hButtonOptEqu, hButtonCancelEntry; HINSTANCE hInst; char lpszAddItem[20]=""; char lpszResult[20]=""; char lpszResult1[20]=""; char lpszResult2[20]=""; char lpszOpt[20]="N"; //贮存操作符号 char stop; double nAddItem=0,nResult=0; double nResult1=0,nResult2=0; int nMax; int nOptF=0; //判断是否按了操作符键 bool bDec=false; //判断是否按了点操作符; LRESULT CALLBACK WndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam); void EquResult(); //按下操作符(+,-,*,/,sqrt,%,=)处理函数 void NumResult(char *NumData); //按下数字键(0~9和小数点)的操作处理函数 //-------------------------主函数------------------------ int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) { // TODO: Place code here. HWND hWnd; MSG Message; WNDCLASS WndClass; char lpszClassName[]="编辑框"; char lpszTitle[]="计算器"; WndClass.cbClsExtra=0; WndClass.hbrBackground=(HBRUSH)(GetStockObject(LTGRAY_BRUSH)); //设置窗体背景:亮灰色 WndClass.hCursor=LoadCursor(NULL,IDC_ARROW); //WndClass.hIcon=LoadIcon(NULL,IDI_APPLICATION); WndClass.hIcon=LoadIcon(NULL,"WinIcon"); WndClass.hInstance=hInstance; WndClass.lpfnWndProc=WndProc; //消息处理 WndClass.lpszClassName=lpszClassname; WndClass.lpszMenuName="Menu"; //加载菜单 WndClass.style=0; if(! RegisterClass(&WndClass)) { MessageBeep(0); return FALSE; } hInst=hInstance; hWnd=CreateWindow( lpszClassName, lpszTitle, WS_OVERLAPPED | WS_SYSMENU | WS_MINIMIZEBOX, CW_USEDEFAULT, CW_USEDEFAULT, 210,230, NULL, NULL, hInstance, NULL ); ShowWindow(hWnd,nCmdShow); UpdateWindow(hWnd); while(GetMessage(&Message,NULL,0,0)) { TranslateMessage(&Message); DispatchMessage(&Message); } return Message.wParam; } //------------------------消息处理-------------------------------- LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) { switch(message) { case WM_CREATE: hEditResult=CreateWindow("EDIT", //建立文本框 NULL, WS_CHILD | WS_VISIBLE | ES_RIGHT | WS_BORDER | ES_READONLY, 10,10, 185,24, hwnd, (HMENU)IDE_RESULT, hInst, NULL); hButtonOptSum7=CreateWindow("BUTTON", //建立按钮7 "7", WS_CHILD | WS_VISIBLE, 10,40, 30,30, hwnd, (HMENU) IDB_NUM7, hInst, NULL); hButtonOptSum8=CreateWindow("BUTTON", //建立按钮8 "8", WS_CHILD | WS_VISIBLE, 45,40, 30,30, hwnd, (HMENU) IDB_NUM8, hInst, NULL); hButtonOptSum9=CreateWindow("BUTTON", //建立按钮9 "9", WS_CHILD | WS_VISIBLE, 80,40, 30,30, hwnd, (HMENU) IDB_NUM9, hInst, NULL); hButtonOptSum4=CreateWindow("BUTTON", //建立按钮4 "4", WS_CHILD | WS_VISIBLE, 10,75, 30,30, hwnd, (HMENU) IDB_NUM4, hInst, NULL); hButtonOptSum5=CreateWindow("BUTTON", //建立按钮5 "5", WS_CHILD | WS_VISIBLE, 45,75, 30,30, hwnd, (HMENU) IDB_NUM5, hInst, NULL); hButtonOptSum6=CreateWindow("BUTTON", //建立按钮6 "6", WS_CHILD | WS_VISIBLE, 80,75, 30,30, hwnd, (HMENU) IDB_NUM6, hInst, NULL); hButtonOptSum1=CreateWindow("BUTTON", //建立按钮1 "1", WS_CHILD | WS_VISIBLE, 10,110, 30,30, hwnd, (HMENU) IDB_NUM1, hInst, NULL); hButtonOptSum2=CreateWindow("BUTTON", //建立按钮2 "2", WS_CHILD | WS_VISIBLE, 45,110, 30,30, hwnd, (HMENU) IDB_NUM2, hInst, NULL); hButtonOptSum3=CreateWindow("BUTTON", //建立按钮3 "3", WS_CHILD | WS_VISIBLE, 80,110, 30,30, hwnd, (HMENU) IDB_NUM3, hInst, NULL); hButtonOptSum0=CreateWindow("BUTTON", //建立按钮0 "0", WS_CHILD | WS_VISIBLE, 10,145, 65,30, hwnd, (HMENU) IDB_NUM0, hInst, NULL); hButtonOptSumDec=CreateWindow("BUTTON", //建立按钮. ".", WS_CHILD | WS_VISIBLE, 80,145, 30,30, hwnd, (HMENU) IDB_NUMDEC, hInst, NULL); hButtonOptSqrt=CreateWindow("BUTTON", //建立按钮Sqr "Sqr", WS_CHILD | WS_VISIBLE, 130,40, 30,30, hwnd, (HMENU) IDB_OPTSQRT, hInst, NULL); hButtonCancelEntry=CreateWindow("BUTTON", //建立按钮CE "C", WS_CHILD | WS_VISIBLE, 165,40, 30,30, hwnd, (HMENU) IDB_CANCLEENTRY, hInst, NULL); hButtonOptAdd=CreateWindow("BUTTON", //建立按钮+ "+", WS_CHILD | WS_VISIBLE, 130,75, 30,30, hwnd, (HMENU)IDB_OPTADD, hInst, NULL); hButtonOptSub=CreateWindow("BUTTON", //建立按钮- "-", WS_CHILD | WS_VISIBLE, 165,75, 30,30, hwnd, (HMENU)IDB_OPTSUB, hInst, NULL); hButtonOptMul=CreateWindow("BUTTON", //建立按钮* "*", WS_CHILD | WS_VISIBLE, 130,110, 30,30, hwnd, (HMENU)IDB_OPTMUL, hInst, NULL); hButtonOptDiv=CreateWindow("BUTTON", //建立按钮/ "/", WS_CHILD | WS_VISIBLE, 165,110, 30,30, hwnd, (HMENU)IDB_OPTDIV, hInst, NULL); hButtonOptEqu=CreateWindow("BUTTON", //建立按钮= "=", WS_CHILD | WS_VISIBLE, 130,145, 30,30, hwnd, (HMENU)IDB_OPTEQU, hInst, NULL); hButtonOptPercent=CreateWindow("BUTTON", //建立按钮% "%", WS_CHILD | WS_VISIBLE, 165,145, 30,30, hwnd, (HMENU)IDB_OPTPERCENT, hInst, NULL); SetWindowText(hEditResult,"0"); break; case WM_SETFOCUS: SetFocus(hEditResult); break; case WM_COMMAND: switch(LOWORD(wParam)) { // 0至9与点按钮 case IDB_NUM0: if (nOptF==0) break; NumResult("0"); break; case IDB_NUM1: NumResult("1"); break; case IDB_NUM2: NumResult("2"); break; case IDB_NUM3: NumResult("3"); break; case IDB_NUM4: NumResult("4"); break; case IDB_NUM5: NumResult("5"); break; case IDB_NUM6: