/* editccpd.cpp A text editing application with extensive file handling */
/* capability. Uses the Common Dialog Functions GetOpenFileName() & */
/* GetSaveFileName(). Adds cut, copy, paste, & delete facilities */
#include <windows.h>
#include <commdlg.h>
#include <string.h>
#include <stdio.h>
#include "resource.h"
LRESULT CALLBACK WndProc (HWND hWnd, UINT wMessage, WPARAM wParam, LPARAM lParam);
int StringTableMessageBox (HWND hWnd, int nString, int nCaption, WORD wFlags);
int PASCAL WinMain (HANDLE hInstance, HANDLE hPrevInstance, LPSTR lpszCmdLine,
int nCmdShow)
{
HWND hWnd ; /* the window's "handle" */
HACCEL hAccel ; /* accelerator table handle */
MSG msg ; /* a message structure */
WNDCLASS wndclass ; /* window class structure */
char cBuf [128] ; /* character buffer */
wndclass.style = CS_HREDRAW | CS_VREDRAW ;
wndclass.lpfnWndProc = WndProc ;
wndclass.cbClsExtra = 0 ;
wndclass.cbWndExtra = 0 ;
wndclass.hInstance = hInstance ;
wndclass.hIcon = LoadIcon (hInstance, "MyIcon") ;
wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ;
wndclass.hbrBackground = GetStockObject (WHITE_BRUSH) ;
wndclass.lpszMenuName = "MyMenu" ;
wndclass.lpszClassName = "MyClass" ;
/* register the window class */
if (!RegisterClass (&wndclass))
return 0 ;
LoadString (hInstance, S_PROGRAMCAPTION, cBuf, sizeof (cBuf)) ;
hWnd = CreateWindow ("MyClass", cBuf, WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
NULL, NULL, hInstance, NULL) ;
ShowWindow (hWnd, nCmdShow) ; /* display the window */
UpdateWindow (hWnd) ;
hAccel = LoadAccelerators (hInstance, "MYACCEL") ; /* load accel. table */
while (GetMessage (&msg, NULL, 0, 0)) /* message loop */
{
if (!TranslateAccelerator (hWnd, hAccel, &msg)) /* translate accel. */
{
TranslateMessage (&msg) ; /* translate keyboard messages */
DispatchMessage (&msg) ; /* send message to WndProc() */
}
}
return (msg.wParam) ;
}
LRESULT CALLBACK WndProc (HWND hWnd, UINT wMessage,
WPARAM wParam, LPARAM lParam)
{
static HANDLE hInstance ;
static OPENFILENAME ofn; /* open file name structure */
FILE *fp ;
PSTR pEditBuf ;
static HWND hEditWindow ;
int nFileLong ;
char cBuf2 [128] ;
static char szFileTitle[_MAX_FNAME + _MAX_EXT], /* filename and extension */
szFile[_MAX_PATH]; /* filename including path */
static char szFilter[] = "Edit Files (*.edt)\0*.edt\0" \
"Text Files (*.txt)\0*.txt\0" \
"All Files (*.*)\0*.*\0\0";
switch (wMessage) /* process windows messages */
{
case WM_CREATE: /* create edit control window */
hInstance = (HINSTANCE)GetWindowLong (hWnd, GWL_HINSTANCE) ;
hEditWindow = CreateWindow ("EDIT", "",
WS_CHILD | WS_VISIBLE | ES_AUTOVSCROLL | ES_MULTILINE |
ES_LEFT | ES_NOHIDESEL | WS_VSCROLL| ES_AUTOHSCROLL |
WS_HSCROLL, 0, 0, 1, 1, hWnd, NULL, hInstance, NULL) ;
SendMessage (hEditWindow, EM_LIMITTEXT, 32000, 0);
break ;
case WM_SIZE: /* keep edit control filling client area */
MoveWindow (hEditWindow, 5, 0, LOWORD (lParam) - 5,
HIWORD (lParam), TRUE) ;
break ;
case WM_COMMAND:
switch (LOWORD(wParam)) /* menu items */
{
case IDM_OPEN: /* ff: opens and reads file selected by user */
/* into edit buffer using file common dlg box*/
/* set all open file structure members to zero */
memset(&ofn, 0, sizeof(OPENFILENAME));
ofn.lStructSize = sizeof(OPENFILENAME);
ofn.hwndOwner = hWnd;
ofn.lpstrFilter = szFilter;
ofn.lpstrFile = szFile;
ofn.nMaxFile = _MAX_PATH;
ofn.lpstrFileTitle = szFileTitle;
ofn.nMaxFileTitle = _MAX_FNAME + _MAX_EXT;
ofn.lpstrInitialDir = NULL; /* use current directory */
ofn.lpstrDefExt = "edt"; /* default file extension */
GetOpenFileName(&ofn); /* fill ofn struct */
lstrcat(szFile,"\0"); /* make sure it's null terminated */
/***** Now open file, get info, and put in edit box *****/
fp = fopen (szFile,"rb") ; /* open the file */
if (fp == NULL)
{
LoadString (hInstance,S_FILENOTOPEN,cBuf2,sizeof (cBuf2)) ;
MessageBox (hWnd, szFileTitle, cBuf2, MB_OK | MB_ICONHAND) ;
}
else /* file is open, so read it */
{ /* window title = file name */
SetWindowText (hWnd, szFileTitle) ;
/* find the length of file */
fseek (fp, 0, SEEK_END) ;
nFileLong = ftell (fp) ;
/* go back to front of file */
fseek (fp, 0, SEEK_SET) ;
/* allocate new edit buffer block */
pEditBuf = (PSTR)malloc (nFileLong+1) ;
if (pEditBuf != NULL)
{ /* copy file data to block */
fread (pEditBuf, 1, nFileLong, fp) ;
fclose(fp); /* close the file */
pEditBuf[nFileLong] = 0 ; /* null terminate text */
/* send it to the edit control */
SetWindowText (hEditWindow, pEditBuf) ;
free (pEditBuf) ;
}
else
StringTableMessageBox (hWnd,S_NOTALLOC,S_MEMERROR,MB_OK | MB_ICONHAND) ;
}
break ;
case IDM_SAVE: /* save edit buffer to file selected by user */
/* set all structure members to zero */
memset(&ofn, 0, sizeof(OPENFILENAME));
ofn.lStructSize = sizeof(OPENFILENAME);
ofn.hwndOwner = hWnd;
ofn.lpstrFilter = szFilter;
ofn.lpstrFile = szFile;
ofn.nMaxFile = _MAX_PATH;
ofn.lpstrFileTitle = szFileTitle;
ofn.nMaxFileTitle = _MAX_FNAME + _MAX_EXT;
ofn.lpstrInitialDir = NULL; /* use current directory */
ofn.lpstrDefExt = "edt"; /* default extension */
GetSaveFileName(&ofn); /* fill ofn struct */
/*** Now open file, get contents of edit box, save to file ***/
fp = fopen (szFile, "wb") ; /* open the file */
if (fp == NULL)
{
LoadString (hInstance,S_FILENOTCREATE,cBuf2,sizeof (cBuf2)) ;
MessageBox (hWnd, szFileTitle, cBuf2, MB_OK | MB_ICONHAND) ;
}
else
{ /* window title = file name */
SetWindowText (hWnd, szFileTitle) ;
/* ff: copies edit buffer to file */
nFileLong = GetWindowTextLength (hEditWindow) ;
if (NULL == (pEditBuf = (PSTR)malloc(nFileLong+1)))
{
StringTableMessageBox (hWnd,S_NOTALLOC,S_MEMERROR,MB_OK|MB_ICONHAND) ;
}
else
{ /* get text from the edit control */
GetWindowText (hEditWindow, pEditBuf, nFileLong+1);
/* write to the file */
fwrite (pEditBuf, 1, nFileLong, fp) ;
free (pEditBuf);
}
fclose(fp) ;
}
break ;
case IDM_COPY: /* copy menu item */
SendMessage (hEditWindow, WM_COPY, 0, 0L) ;
break ;
case IDM_CUT: /* cut menu item */
SendMessage (hEditWindow, WM_CUT, 0, 0L) ;
break ;
case IDM_DELETE: /* delete menu item */
SendMessage (hEditWindow, WM_CUT, 0, 0L) ;
if (OpenClipboard (hWnd))
{ /* empty clipboard */
EmptyClipboard () ;
CloseClipboard () ;
}
break ;
case IDM_PASTE: /* paste menu item */
SendMessage (hEditWindow, WM_PASTE, 0, 0L) ;
break ;
case IDM_ABOUT:
StringTableMessageBox (hWnd, S_ABOUTTEXT, S_ABOUTCAPTION,
MB_OK | MB_ICONINFORMATION) ;
break ;
case IDM_QUIT: /* "Quit" menu item */
DestroyWindow (hWnd) ; /* destroy window, */
break ; /* terminating application */
}
break ;
case WM_DESTROY: /* stop application */
PostQuitMessage (0) ;
break ;
default: /* default windows message processing */
return (DefWindowProc (hWnd, wMessage, wParam, lParam)) ;
}
return (0) ;
}
/*** display a message box based on two string table entries ***/
int StringTableMessageBox (HWND hWnd, int nString, int nCaption, WORD
wFlags)
{
char cBuf1 [128], cBuf2 [128] ;
HANDLE hInstance ;
hInstance = (HINSTANCE)GetWindowLong (hWnd, GWL_HINSTANCE) ;
LoadString (hInstance, nString, cBuf1, sizeof (cBuf1)) ;
LoadString (hInstance, nCaption, cBuf2, sizeof (cBuf2)) ;
return (MessageBox (hWnd, cBuf1, cBuf2, wFlags)) ;
}