#define _WIN32_WINNT 0x0500 #include #include #include #include #include #define Reset() \ operand1 = operand2 = result = 0.0; \ Operator = ' '; dot = false; \ MessageBox(0,"Division By Zero!","Error",MB_ICONERROR|MB_OK); \ return 0; \ #define Reset2() \ operand1 = operand2 = result = 0.0; \ Operator = ' '; dot = false; \ MessageBox(0,"No Operator Specified!","Error",MB_ICONERROR|MB_OK); \ using namespace std; HINSTANCE hInst; HWND Btn[10]; HWND B_Dot, B_Add, B_Sub, B_Mul, B_Div, B_Cal, B_Cls, Label; const char ClassName[ ] = "Calculator"; const int Btn_0 = 0, Btn_1 = 1, Btn_2 = 2, Btn_3 = 3, Btn_4 = 4, Btn_5 = 5, Btn_6 = 6, Btn_7 = 7, Btn_8 = 8, Btn_9 = 9, ID_DOT = 10, ID_ADD = 11, ID_SUB = 12, ID_MUL = 13, ID_DIV = 14, ID_CAL = 15, ID_CLS = 16, ID_LBL = 17; inline int SetFont(int identifier, HWND hwnd, BOOL NOT_LBL) { if(NOT_LBL) { HFONT hF = CreateFont (40, 20, 0, 0, FW_DONTCARE, FALSE, FALSE, FALSE, ANSI_CHARSET, OUT_DEFAULT_PRECIS, \ CLIP_DEFAULT_PRECIS, ANTIALIASED_QUALITY, DEFAULT_PITCH, "Consolas"); SendDlgItemMessage(hwnd, identifier, WM_SETFONT, (WPARAM)hF, MAKELPARAM(true, 0)); } else { HFONT hF = CreateFont (40, 20, 0, 0, FW_BLACK, FALSE, FALSE, FALSE, ANSI_CHARSET, OUT_DEFAULT_PRECIS, \ CLIP_DEFAULT_PRECIS, ANTIALIASED_QUALITY, DEFAULT_PITCH, "Consolas"); SendDlgItemMessage(hwnd, identifier, WM_SETFONT, (WPARAM)hF, MAKELPARAM(true, 0)); } return 0; } LRESULT CALLBACK WindowProcedure(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) { stringstream cbuf; int i = 0; char lblText[256]; static bool dot; static double operand1, operand2; double result; static char Operator; switch(message) { case WM_CREATE: { Label = CreateWindowEx (WS_EX_CLIENTEDGE|WS_EX_RIGHT,"STATIC","0", \ WS_VISIBLE|WS_CHILD,10,10,210,50,hwnd,(HMENU)ID_LBL,hInst,NULL); Btn[7] = CreateWindow("BUTTON","7",WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON, 10, 70,60,60,hwnd,(HMENU) Btn_7,hInst,NULL); Btn[8] = CreateWindow("BUTTON","8",WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON, 80, 70,60,60,hwnd,(HMENU) Btn_8,hInst,NULL); Btn[9] = CreateWindow("BUTTON","9",WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON,150, 70,60,60,hwnd,(HMENU) Btn_9,hInst,NULL); Btn[4] = CreateWindow("BUTTON","4",WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON, 10,140,60,60,hwnd,(HMENU) Btn_4,hInst,NULL); Btn[5] = CreateWindow("BUTTON","5",WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON, 80,140,60,60,hwnd,(HMENU) Btn_5,hInst,NULL); Btn[6] = CreateWindow("BUTTON","6",WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON,150,140,60,60,hwnd,(HMENU) Btn_6,hInst,NULL); Btn[1] = CreateWindow("BUTTON","1",WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON, 10,210,60,60,hwnd,(HMENU) Btn_1,hInst,NULL); Btn[2] = CreateWindow("BUTTON","2",WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON, 80,210,60,60,hwnd,(HMENU) Btn_2,hInst,NULL); Btn[3] = CreateWindow("BUTTON","3",WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON,150,210,60,60,hwnd,(HMENU) Btn_3,hInst,NULL); Btn[0] = CreateWindow("BUTTON","0",WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON, 10,280,60,60,hwnd,(HMENU) Btn_0,hInst,NULL); B_Dot = CreateWindow("BUTTON", ".",WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON, 80,280,60,60,hwnd,(HMENU) ID_DOT,hInst,NULL); B_Add = CreateWindow("BUTTON", "+",WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON,220,280,60,60,hwnd,(HMENU) ID_ADD,hInst,NULL); B_Sub = CreateWindow("BUTTON", "-",WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON,220,210,60,60,hwnd,(HMENU) ID_SUB,hInst,NULL); B_Mul = CreateWindow("BUTTON", "x",WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON,220,140,60,60,hwnd,(HMENU) ID_MUL,hInst,NULL); B_Div = CreateWindow("BUTTON", "/",WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON,220, 70,60,60,hwnd,(HMENU) ID_DIV,hInst,NULL); B_Cal = CreateWindow("BUTTON", "=",WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON,150,280,60,60,hwnd,(HMENU) ID_CAL,hInst,NULL); B_Cls = CreateWindow("BUTTON","<-",WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON,230, 10,50,50,hwnd,(HMENU) ID_CLS,hInst,NULL); for(i =0; i <= 17; i++) SetFont(i,hwnd,TRUE); SetFont(ID_LBL,hwnd,FALSE); break; } case WM_COMMAND: { if(HIWORD(wParam) == BN_CLICKED) { switch(LOWORD(wParam)) { case ID_CAL: { GetWindowText(Label,lblText,256); cbuf << lblText; cbuf >> operand2; cbuf.clear(); switch(Operator) { case '+': result = operand1 + operand2; break; case '-': result = operand1 - operand2; break; case '*': result = operand1 * operand2; break; case '/': (operand2 != 0) ? (result = operand1 / operand2) : Reset() ; break; default : Reset2(); break; } cbuf<> operand1; Operator = '+'; dot = false; SetWindowText(Label,""); break; } case ID_SUB: { GetWindowText(Label,lblText,256); cbuf << lblText; cbuf >> operand1; Operator = '-'; dot = false; SetWindowText(Label,""); break; } case ID_MUL: { GetWindowText(Label,lblText,256); cbuf << lblText; cbuf >> operand1; Operator = '*'; dot = false; SetWindowText(Label,""); break; } case ID_DIV: { GetWindowText(Label,lblText,256); cbuf << lblText; cbuf >> operand1; Operator = '/'; dot = false; SetWindowText(Label,""); break; } case Btn_0 : { GetWindowText(Label,lblText,256); if((lblText[0] == '0') && (!dot)) return 0; else strcat(lblText,"0"); SetWindowText(Label,lblText); break; } case Btn_1 : { GetWindowText(Label,lblText,256); if((lblText[0] == '0') && (!dot)) strcpy(lblText,"1"); else strcat(lblText,"1"); SetWindowText(Label,lblText); break; } case Btn_2 : { GetWindowText(Label,lblText,256); if((lblText[0] == '0') && (!dot)) strcpy(lblText,"2"); else strcat(lblText,"2"); SetWindowText(Label,lblText); break; } case Btn_3 : { GetWindowText(Label,lblText,256); if((lblText[0] == '0') && (!dot)) strcpy(lblText,"3"); else strcat(lblText,"3"); SetWindowText(Label,lblText); break; } case Btn_4 : { GetWindowText(Label,lblText,256); if((lblText[0] == '0') && (!dot)) strcpy(lblText,"4"); else strcat(lblText,"4"); SetWindowText(Label,lblText); break; } case Btn_5 : { GetWindowText(Label,lblText,256); if((lblText[0] == '0') && (!dot)) strcpy(lblText,"5"); else strcat(lblText,"5"); SetWindowText(Label,lblText); break; } case Btn_6 : { GetWindowText(Label,lblText,256); if((lblText[0] == '0') && (!dot)) strcpy(lblText,"6"); else strcat(lblText,"6"); SetWindowText(Label,lblText); break; } case Btn_7 : { GetWindowText(Label,lblText,256); if((lblText[0] == '0') && (!dot)) strcpy(lblText,"7"); else strcat(lblText,"7"); SetWindowText(Label,lblText); break; } case Btn_8 : { GetWindowText(Label,lblText,256); if((lblText[0] == '0') && (!dot)) strcpy(lblText,"8"); else strcat(lblText,"8"); SetWindowText(Label,lblText); break; } case Btn_9 : { GetWindowText(Label,lblText,256); if((lblText[0] == '0') && (!dot)) strcpy(lblText,"9"); else strcat(lblText,"9"); SetWindowText(Label,lblText); break; } } } break; } case WM_DESTROY: { PostQuitMessage(0); break; } default: { return DefWindowProc(hwnd,message,wParam,lParam); break; } } return 0; } int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrev, LPSTR CmdLine, int nCmdShow) { RECT R; R.left=0; R.right=R.left+0; R.top=0; R.bottom=R.top+0; MoveWindow(GetConsoleWindow(),R.left,R.top,0,0,FALSE); SMALL_RECT SIZE = {0,0,SHORT(0),SHORT(0)}; SetConsoleWindowInfo(GetStdHandle(STD_OUTPUT_HANDLE),TRUE,&SIZE); HWND hwnd; MSG msgs; WNDCLASSEX Window; hInst = hInstance; Window.hInstance = hInst; Window.lpszClassName = ClassName; Window.lpfnWndProc = WindowProcedure; Window.style = CS_VREDRAW | CS_HREDRAW; Window.cbSize = sizeof(WNDCLASSEX); Window.hIcon = LoadIcon (NULL, IDI_APPLICATION); Window.hIconSm = LoadIcon (NULL, IDI_APPLICATION); Window.hCursor = LoadCursor(NULL, IDC_ARROW); Window.lpszMenuName = NULL; Window.cbClsExtra = 0; Window.cbWndExtra = 0; Window.hbrBackground = CreateSolidBrush(RGB(255,255,255)); if(!RegisterClassEx(&Window)) { MessageBox(NULL,"Unable to Register the Class!","ERROR",MB_OK|MB_ICONERROR); return 0; } hwnd = CreateWindowEx( 0, ClassName, "Calculator", WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU, CW_USEDEFAULT, CW_USEDEFAULT, 300, 380, HWND_DESKTOP, NULL, hInst, NULL); ShowWindow(hwnd,nCmdShow); while(GetMessage(&msgs,NULL,0,0)) { TranslateMessage(&msgs); DispatchMessage (&msgs); } return msgs.wParam; }

GUI Calculator - Windows