Win API를 이용한 계산기 제작(1)

1차적으로 만든 계산기 소스 코드

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전체 소스 코드

#include <windows.h> #include <stdio.h> #include "resource.h" LRESULT CALLBACK WndProc(HWND hwnd, UINT iMsg, WPARAM wParam, LPARAM lParam); BOOL CALLBACK Dlg_Proc(HWND hDlg, UINT iMsg,WPARAM wParam, LPARAM lParam); HINSTANCE hInst; int a = NULL, b = NULL, result = 0, count = NULL; char ch; int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpszCmdLine, int nCmdShow) { HWND   hwnd; MSG   msg; WNDCLASS WndClass; hInst = hInstance; WndClass.style = CS_HREDRAW | CS_VREDRAW; WndClass.lpfnWndProc = WndProc; WndClass.cbClsExtra = 0; WndClass.cbWndExtra = 0; WndClass.hInstance = hInstance; WndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION); WndClass.hCursor = LoadCursor(NULL, IDC_ARROW); WndClass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH); WndClass.lpszMenuName = MAKEINTRESOURCE(IDR_MENU_6); WndClass.lpszClassName = "Example1"; RegisterClass(&WndClass); hwnd = CreateWindow("Example1", "Example1", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL ); ShowWindow(hwnd, nCmdShow); UpdateWindow(hwnd); while (GetMessage(&msg, NULL, 0, 0)) { TranslateMessage(&msg); DispatchMessage(&msg); } return (int)msg.wParam; } LRESULT CALLBACK WndProc(HWND hwnd, UINT iMsg, WPARAM wParam, LPARAM lParam) { switch (iMsg) { case WM_CREATE: break; case WM_COMMAND: switch (LOWORD(wParam)) { case ID_DIALOG_6: DialogBox(hInst, MAKEINTRESOURCE(IDD_DIALOG1), hwnd, Dlg_Proc); break; } break; case WM_DESTROY: PostQuitMessage(0); break; } return DefWindowProc(hwnd, iMsg, wParam, lParam); } BOOL CALLBACK Dlg_Proc(HWND hDlg, UINT iMsg, WPARAM wParam, LPARAM lParam) { static char str[50] = "0"; switch (iMsg) { case WM_INITDIALOG: SetDlgItemText(hDlg, IDC_EDIT_OUTPUT, str); return 1; case WM_COMMAND: switch (LOWORD(wParam)) { case IDC_BUTTON_0: if (count == NULL) { if (a != NULL) { a *= 10; } else a = 0; _itoa_s(a, str, 10); SetDlgItemText(hDlg, IDC_EDIT_OUTPUT, str); } else { if (b != NULL) { b *= 10; } else b = 0; _itoa_s(b, str, 10); SetDlgItemText(hDlg, IDC_EDIT_OUTPUT, str); } break; case IDC_BUTTON_1: if (count == NULL) { if (a != NULL) { a *= 10; a += 1; } else a = 1; //sprintf_s(str, "%d", a); _itoa_s(a, str, 10); SetDlgItemText(hDlg, IDC_EDIT_OUTPUT, str); } else { if (b != NULL) { b *= 10; b += 1; } else b = 1; _itoa_s(b, str, 10); SetDlgItemText(hDlg, IDC_EDIT_OUTPUT, str); } break; case IDC_BUTTON_2: if (count == NULL) { if (a != NULL) { a *= 10; a += 2; } else a = 2; _itoa_s(a, str, 10); SetDlgItemText(hDlg, IDC_EDIT_OUTPUT, str); } else { if (b != NULL) { b *= 10; b += 2; } else b = 2; _itoa_s(b, str, 10); SetDlgItemText(hDlg, IDC_EDIT_OUTPUT, str); } break; case IDC_BUTTON_3: if (count == NULL) { if (a != NULL) { a *= 10; a += 3; } else a = 3; _itoa_s(a, str, 10); SetDlgItemText(hDlg, IDC_EDIT_OUTPUT, str); } else { if (b != NULL) { b *= 10; b += 3; } else b = 3; _itoa_s(b, str, 10); SetDlgItemText(hDlg, IDC_EDIT_OUTPUT, str); } break; case IDC_BUTTON_4: if (count == NULL) { if (a != NULL) { a *= 10; a += 4; } else a = 4; _itoa_s(a, str, 10); SetDlgItemText(hDlg, IDC_EDIT_OUTPUT, str); } else { if (b != NULL) { b *= 10; b += 4; } else b = 4; _itoa_s(b, str, 10); SetDlgItemText(hDlg, IDC_EDIT_OUTPUT, str); } break; case IDC_BUTTON_5: if (count == NULL) { if (a != NULL) { a *= 10; a += 5; } else a = 5; _itoa_s(a, str, 10); SetDlgItemText(hDlg, IDC_EDIT_OUTPUT, str); } else { if (b != NULL) { b *= 10; b += 5; } else b = 5; _itoa_s(b, str, 10); SetDlgItemText(hDlg, IDC_EDIT_OUTPUT, str); } break; case IDC_BUTTON_6: if (count == NULL) { if (a != NULL) { a *= 10; a += 6; } else a = 6; _itoa_s(a, str, 10); SetDlgItemText(hDlg, IDC_EDIT_OUTPUT, str); } else { if (b != NULL) { b *= 10; b += 6; } else b = 6; _itoa_s(b, str, 10); SetDlgItemText(hDlg, IDC_EDIT_OUTPUT, str); } break; case IDC_BUTTON_7: if (count == NULL) { if (a != NULL) { a *= 10; a += 7; } else a = 7; _itoa_s(a, str, 10); SetDlgItemText(hDlg, IDC_EDIT_OUTPUT, str); } else { if (b != NULL) { b *= 10; b += 7; } else b = 7; _itoa_s(b, str, 10); SetDlgItemText(hDlg, IDC_EDIT_OUTPUT, str); } break; case IDC_BUTTON_8: if (count == NULL) { if (a != NULL) { a *= 10; a += 8; } else a = 8; _itoa_s(a, str, 10); SetDlgItemText(hDlg, IDC_EDIT_OUTPUT, str); } else { if (b != NULL) { b *= 10; b += 8; } else b = 8; _itoa_s(b, str, 10); SetDlgItemText(hDlg, IDC_EDIT_OUTPUT, str); } break; case IDC_BUTTON_9: if (count == NULL) { if (a != NULL) { a *= 10; a += 9; } else a = 9; _itoa_s(a, str, 10); SetDlgItemText(hDlg, IDC_EDIT_OUTPUT, str); } else { if (b != NULL) { b *= 10; b += 9; } else b = 9; _itoa_s(b, str, 10); SetDlgItemText(hDlg, IDC_EDIT_OUTPUT, str); } break; case IDC_BUTTON_DODGE: break; case IDC_BUTTON_ADD: ch = '+'; count = 1; break; case IDC_BUTTON_SUB: ch = '-'; count = 1; break; case IDC_BUTTON_MUL: ch = 'X'; count = 1; break; case IDC_BUTTON_DIV: ch = '/'; count = 1; break; case IDC_BUTTON_RESULT: if (ch == '+') result = a + b; else if (ch == '-') result = a - b; else if (ch == 'X') result = a * b; else if (ch == '/') { if (b = NULL) b = 1; result = a / b; } else break; sprintf_s(str, "%d", result); SetDlgItemText(hDlg, IDC_EDIT_OUTPUT, str); count = 0; a = 0; b = 0; break; case IDC_BUTTON_CLOSE: count = 0; a = 0; b = 0; result = 0; EndDialog(hDlg, 0); break; case IDCANCEL: EndDialog(hDlg, 0); break; } break; } return 0; }

정수형은 문제없이 계산할 수 있지만 실수형은 아직 준비가 되지 않았다.

다른 방법으로 만들수도 있지만 급하게 만들 필요가 있기 때문에 그냥 제작하게 되었다.