/*
main.c
*/
#include <windows.h>
#include "Main.h"
static char g_szClassName[] = "MyWindowClass";static HINSTANCE g_hInst = NULL;
#define IDC_MAIN_TEXT 1001
BOOL LoadFile(HWND hEdit, LPSTR pszFileName)
// Define a function that called by doFileOpeneSave
// to open a file{ HANDLE hFile; BOOL bSuccess = FALSE;
hFile = CreateFile(pszFileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0); if(hFile != INVALID_HANDLE_VALUE) { DWORD dwFileSize; dwFileSize = GetFileSize(hFile, NULL); if(dwFileSize != 0xFFFFFFFF) { LPSTR pszFileText; pszFileText = (LPSTR)GlobalAlloc(GPTR, dwFileSize + 1); if(pszFileText != NULL) { DWORD dwRead; if(ReadFile(hFile, pszFileText, dwFileSize, &dwRead, NULL)) { pszFileText[dwFileSize] = 0; // Null terminator if(SetWindowText(hEdit, pszFileText)) bSuccess = TRUE; // It worked! } GlobalFree(pszFileText); } } CloseHandle(hFile); } return bSuccess;}
BOOL SaveFile(HWND hEdit, LPSTR pszFileName)
// Define a function that called by doFileOpeneSave
// to save a file{ HANDLE hFile; BOOL bSuccess = FALSE;
hFile = CreateFile(pszFileName, GENERIC_WRITE, 0, 0, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0); if(hFile != INVALID_HANDLE_VALUE) { DWORD dwTextLength; dwTextLength = GetWindowTextLength(hEdit); if(dwTextLength > 0)// No need to bother if there's no text. { LPSTR pszText; pszText = (LPSTR)GlobalAlloc(GPTR, dwTextLength + 1); if(pszText != NULL) { if(GetWindowText(hEdit, pszText, dwTextLength + 1)) { DWORD dwWritten; if(WriteFile(hFile, pszText, dwTextLength, &dwWritten, NULL)) bSuccess = TRUE; } GlobalFree(pszText); } } CloseHandle(hFile); } return bSuccess;}
BOOL DoFileOpenSave(HWND hwnd, BOOL bSave)
// Function proc the message open & save file{ OPENFILENAME ofn; char szFileName[MAX_PATH];
ZeroMemory(&ofn, sizeof(ofn)); szFileName[0] = 0;
ofn.lStructSize = sizeof(ofn); ofn.hwndOwner = hwnd; ofn.lpstrFilter = "Text Files (*.txt)/0*.txt/0All Files (*.*)/0*.*/0/0"; ofn.lpstrFile = szFileName; ofn.nMaxFile = MAX_PATH; ofn.lpstrDefExt = "txt";
if(bSave) { ofn.Flags = OFN_EXPLORER | OFN_PATHMUSTEXIST | OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT; if(GetSaveFileName(&ofn)) { if(!SaveFile(GetDlgItem(hwnd, IDC_MAIN_TEXT), szFileName)) { MessageBox(hwnd, "Save file failed.", "Error", MB_OK | MB_ICONEXCLAMATION); return FALSE; } } } else { ofn.Flags = OFN_EXPLORER | OFN_FILEMUSTEXIST | OFN_HIDEREADONLY; if(GetOpenFileName(&ofn)) { if(!LoadFile(GetDlgItem(hwnd, IDC_MAIN_TEXT), szFileName)) { MessageBox(hwnd, "Load of file failed.", "Error", MB_OK | MB_ICONEXCLAMATION); return FALSE; } } } return TRUE;}
LRESULT CALLBACK WndProc(HWND hwnd, UINT Message, WPARAM wParam, LPARAM lParam)
// Message dispath and proc
//when a event happend ,a certain message was sent ,and then dispach to
// functions that proc it{ switch(Message) { case WM_CREATE: CreateWindow("EDIT", "", WS_CHILD | WS_VISIBLE | WS_HSCROLL | WS_VSCROLL | ES_MULTILINE | ES_WANTRETURN, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, hwnd, (HMENU)IDC_MAIN_TEXT, g_hInst, NULL);
SendDlgItemMessage(hwnd, IDC_MAIN_TEXT, WM_SETFONT, (WPARAM)GetStockObject(DEFAULT_GUI_FONT), MAKELPARAM(TRUE, 0)); break; case WM_SIZE: if(wParam != SIZE_MINIMIZED) MoveWindow(GetDlgItem(hwnd, IDC_MAIN_TEXT), 0, 0, LOWORD(lParam), HIWORD(lParam), TRUE); break; case WM_SETFOCUS: SetFocus(GetDlgItem(hwnd, IDC_MAIN_TEXT)); break; case WM_COMMAND: switch(LOWORD(wParam)) { case CM_FILE_OPEN: DoFileOpenSave(hwnd, FALSE); break; case CM_FILE_SAVEAS: DoFileOpenSave(hwnd, TRUE); break; case CM_FILE_EXIT: PostMessage(hwnd, WM_CLOSE, 0, 0); break; case CM_ABOUT: MessageBox (NULL, "File Editor for Windows !/n Using the Win32 API" , "About...", 0); break; } break; case WM_CLOSE: DestroyWindow(hwnd); break; case WM_DESTROY: PostQuitMessage(0); break; default: return DefWindowProc(hwnd, Message, wParam, lParam); } return 0;}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
// Create you window class WNDCLASS OR WNDCLASS{ WNDCLASSEX WndClass; HWND hwnd; MSG Msg;
g_hInst = hInstance;
WndClass.cbSize = sizeof(WNDCLASSEX); WndClass.style = 0; WndClass.lpfnWndProc = WndProc; WndClass.cbClsExtra = 0; WndClass.cbWndExtra = 0; WndClass.hInstance = g_hInst; WndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION); WndClass.hCursor = LoadCursor(NULL, IDC_ARROW); WndClass.hbrBackground = (HBRUSH)(COLOR_WINDOW+1); WndClass.lpszMenuName = "MAINMENU"; WndClass.lpszClassName = g_szClassName; WndClass.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
if(!RegisterClassEx(&WndClass)) { MessageBox(0, "Window Registration Failed!", "Error!", MB_ICONEXCLAMATION | MB_OK | MB_SYSTEMMODAL); return 0; }
hwnd = CreateWindowEx( WS_EX_CLIENTEDGE, g_szClassName, "File Editor Example Program", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, 320, 240, NULL, NULL, g_hInst, NULL);
if(hwnd == NULL) { MessageBox(0, "Window Creation Failed!", "Error!", MB_ICONEXCLAMATION | MB_OK | MB_SYSTEMMODAL); return 0; }
ShowWindow(hwnd, nCmdShow);
UpdateWindow(hwnd); /Show the window ,otherwise the window cannot be seen
while(GetMessage(&Msg, NULL, 0, 0)) //loop until get the "exit" message { TranslateMessage(&Msg); DispatchMessage(&Msg); } return Msg.wParam;}
/*
main.h
*/
#define CM_FILE_SAVEAS 9072#define CM_FILE_EXIT 9071#define CM_FILE_OPEN 9070#define CM_ABOUT 9069#define CM_REG 9068
