Text editor

**beene** · 10-17-2006

Hi all
I was tempted to create a windows application, and i thought it better be something good, so i decided on a text editor, i need programmers who are good in general C/C++, just reply on this thread if you're interested.

**Salem** · 10-17-2006

What will be new and interesting about this one which isn't implemented in any of the 100's of text editors which already exist?

**beene** · 10-17-2006

I havn't really thought about that, well, what would you like to see new in a text editor?

**beene** · 10-17-2006

anybody?

**Hussain Hani** · 10-17-2006

i think u need DirectX for better graphics

**beene** · 10-17-2006

well, i have a few files already:
This is just a skeleton of the editor

Code:

//Neatpad.c

#include <windows.h>
#include <tchar.h>
#include <commctrl.h>
#include "..\TextView\TextView.h"
#include "resource.h"

#define APP_TITLE   _T("Neatpad")
#define WEBSITE_STR _T("www.catch22.net")

TCHAR		szAppName[] = APP_TITLE;
HWND		hwndMain;
HWND		hwndTextView;

TCHAR szFileName[MAX_PATH];
TCHAR szFileTitle[MAX_PATH];

#pragma comment(linker, "/OPT:NOWIN98")

BOOL ShowOpenFileDlg(HWND hwnd, PSTR pstrFileName, PSTR pstrTitleName)
{
	TCHAR *szFilter = _T("Text Files (*.txt)\0*.txt\0All Files (*.*)\0*.*\0\0");
	
	OPENFILENAME ofn	= { sizeof(ofn) };

	ofn.hwndOwner		= hwnd;
	ofn.hInstance		= GetModuleHandle(0);
	ofn.lpstrFilter		= szFilter;
	ofn.lpstrFile		= pstrFileName;
	ofn.lpstrFileTitle	= pstrTitleName;
	
	ofn.nFilterIndex	= 1;
	ofn.nMaxFile		= _MAX_PATH;
	ofn.nMaxFileTitle	= _MAX_FNAME + _MAX_EXT; 

	// flags to control appearance of open-file dialog
	ofn.Flags			=	OFN_EXPLORER			| 
							OFN_ENABLESIZING		|
							OFN_ALLOWMULTISELECT	| 
							OFN_FILEMUSTEXIST;

	return GetOpenFileName(&ofn);
}

void ShowAboutDlg(HWND hwndParent)
{
	MessageBox( hwndParent, 
				APP_TITLE _T("\r\n\r\n")  WEBSITE_STR, 
				APP_TITLE, 
				MB_OK | MB_ICONINFORMATION
				);
}

void SetWindowFileName(HWND hwnd, TCHAR *szFileName)
{
	TCHAR ach[MAX_PATH + sizeof(szAppName) + 4];

	wsprintf(ach, _T("%s - %s"), szFileName, szAppName);
	SetWindowText(hwnd, ach);
}

//
//	Main window procedure
//
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
	static int width, height;

	switch(msg)
	{
	case WM_CREATE:
		hwndTextView = CreateTextView(hwnd);

		// automatically create new document when we start
		PostMessage(hwnd, WM_COMMAND, IDM_FILE_NEW, 0);
		return 0;

	case WM_DESTROY:
		PostQuitMessage(0);
		return 0;

	case WM_COMMAND:
		switch(LOWORD(wParam))
		{
		case IDM_FILE_NEW:
			SetWindowFileName(hwnd, _T("Untitled"));
			return 0;

		case IDM_FILE_OPEN:

			// get a filename to open
			if(ShowOpenFileDlg(hwnd, szFileName, szFileTitle))
			{
				SetWindowFileName(hwnd, szFileTitle);
			}

			return 0;

		case IDM_HELP_ABOUT:
			ShowAboutDlg(hwnd);
			return 0;
		}
		return 0;

	case WM_CLOSE:
		DestroyWindow(hwnd);
		return 0;

	case WM_SIZE:
		width  = (short)LOWORD(lParam);
		height = (short)HIWORD(lParam);

		MoveWindow(hwndTextView, 0, 0, width, height, TRUE);
		return 0;

	}
	return DefWindowProc(hwnd, msg, wParam, lParam);
}

//
//	Register main window class
//
void InitMainWnd()
{
	WNDCLASSEX wcx;
	HANDLE hInst = GetModuleHandle(0);

	// Window class for the main application parent window
	wcx.cbSize			= sizeof(wcx);
	wcx.style			= 0;
	wcx.lpfnWndProc		= WndProc;
	wcx.cbClsExtra		= 0;
	wcx.cbWndExtra		= 0;
	wcx.hInstance		= hInst;
	wcx.hCursor			= LoadCursor (NULL, IDC_ARROW);
	wcx.hbrBackground	= (HBRUSH)0;
	wcx.lpszMenuName	= MAKEINTRESOURCE(IDR_MENU1);
	wcx.lpszClassName	= szAppName;
	wcx.hIcon			= LoadImage(hInst, MAKEINTRESOURCE(IDI_ICON1), IMAGE_ICON, 32, 32, LR_CREATEDIBSECTION);
	wcx.hIconSm			= LoadImage(hInst, MAKEINTRESOURCE(IDI_ICON1), IMAGE_ICON, 16, 16, LR_CREATEDIBSECTION);

	RegisterClassEx(&wcx);
}

//
//	Create a top-level window
//
HWND CreateMainWnd()
{
	return CreateWindowEx(0,
				szAppName,				// window class name
				szAppName,				// window caption
				WS_OVERLAPPEDWINDOW|WS_CLIPCHILDREN,
				CW_USEDEFAULT,			// initial x position
				CW_USEDEFAULT,			// initial y position
				560,					// initial x size
				320,					// initial y size
				NULL,					// parent window handle
				NULL,					// use window class menu
				GetModuleHandle(0),		// program instance handle
				NULL);					// creation parameters
}

//
//	Entry-point for text-editor application
//
int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPSTR lpCmdLine, int iShowCmd)
{
	MSG			msg;
	HACCEL		hAccel;

	// initialize window classes
	InitMainWnd();
	InitTextView();

	// create the main window!
	hwndMain = CreateMainWnd();

	ShowWindow(hwndMain, iShowCmd);

	// load keyboard accelerator table
	hAccel = LoadAccelerators(hInst, MAKEINTRESOURCE(IDR_ACCELERATOR1));

	// message-loop
	while(GetMessage(&msg, NULL, 0, 0) > 0)
	{
		if(!TranslateAccelerator(hwndMain, hAccel, &msg))
		{
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}
	}

	return 0;
}

Code:

//resource.h

#define IDR_MENU1                       101
#define IDI_ICON1                       102
#define IDR_ACCELERATOR1                103
#define IDM_FILE_NEW                    40001
#define IDM_FILE_OPEN                   40002
#define IDM_FILE_EXIT                   40003
#define IDM_HELP_ABOUT                  40004

// Next default values for new objects
// 
#ifdef APSTUDIO_INVOKED
#ifndef APSTUDIO_READONLY_SYMBOLS
#define _APS_NEXT_RESOURCE_VALUE        104
#define _APS_NEXT_COMMAND_VALUE         40005
#define _APS_NEXT_CONTROL_VALUE         1000
#define _APS_NEXT_SYMED_VALUE           101
#endif
#endif

Code:

//resource.rc

#include "resource.h"

#define APSTUDIO_READONLY_SYMBOLS
/////////////////////////////////////////////////////////////////////////////
//
// Generated from the TEXTINCLUDE 2 resource.
//
#include "afxres.h"

/////////////////////////////////////////////////////////////////////////////
#undef APSTUDIO_READONLY_SYMBOLS

/////////////////////////////////////////////////////////////////////////////
// English (U.K.) resources

#if !defined(AFX_RESOURCE_DLL) || defined(AFX_TARG_ENG)
#ifdef _WIN32
LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_UK
#pragma code_page(1252)
#endif //_WIN32

/////////////////////////////////////////////////////////////////////////////
//
// Menu
//

IDR_MENU1 MENU DISCARDABLE 
BEGIN
    POPUP "&File"
    BEGIN
        MENUITEM "&New\tCtrl+N",                IDM_FILE_NEW
        MENUITEM "&Open...\tCtrl+O",            IDM_FILE_OPEN
        MENUITEM SEPARATOR
        MENUITEM "E&xit",                       IDM_FILE_EXIT
    END
    POPUP "&Help"
    BEGIN
        MENUITEM "&About",                      IDM_HELP_ABOUT
    END
END


#ifdef APSTUDIO_INVOKED
/////////////////////////////////////////////////////////////////////////////
//
// TEXTINCLUDE
//

1 TEXTINCLUDE DISCARDABLE 
BEGIN
    "resource.h\0"
END

2 TEXTINCLUDE DISCARDABLE 
BEGIN
    "#include ""afxres.h""\r\n"
    "\0"
END

3 TEXTINCLUDE DISCARDABLE 
BEGIN
    "\r\n"
    "\0"
END

#endif    // APSTUDIO_INVOKED


/////////////////////////////////////////////////////////////////////////////
//
// Icon
//

// Icon with lowest ID value placed first to ensure application icon
// remains consistent on all systems.
IDI_ICON1               ICON    DISCARDABLE     "icon1.ico"

/////////////////////////////////////////////////////////////////////////////
//
// Accelerator
//

IDR_ACCELERATOR1 ACCELERATORS DISCARDABLE 
BEGIN
    "N",            IDM_FILE_NEW,           VIRTKEY, CONTROL, NOINVERT
    "O",            IDM_FILE_OPEN,          VIRTKEY, CONTROL, NOINVERT
END

#endif    // English (U.K.) resources
/////////////////////////////////////////////////////////////////////////////



#ifndef APSTUDIO_INVOKED
/////////////////////////////////////////////////////////////////////////////
//
// Generated from the TEXTINCLUDE 3 resource.
//


/////////////////////////////////////////////////////////////////////////////
#endif    // not APSTUDIO_INVOKED

Code:

//textview.cpp

#include <windows.h>
#include <tchar.h>
#include "TextView.h"
#include "TextViewInternal.h"

//
//	Painting procedure for TextView objects
//
LRESULT WINAPI TextView::OnPaint()
{
	HDC			hdc;
	PAINTSTRUCT ps;
	RECT		rect;
	char		*text = _T("Hello World!");

	HANDLE		hOldFont;
	HFONT		hFont;

	hdc = BeginPaint(m_hWnd, &ps);

	hFont = (HFONT)GetStockObject(ANSI_FIXED_FONT);
	hOldFont = SelectObject(hdc, hFont);

	GetClientRect(m_hWnd, &rect);

	ExtTextOut(hdc, 10, 10, ETO_OPAQUE, &rect, text, lstrlen(text), 0);

	SelectObject(hdc, hOldFont);

	EndPaint(m_hWnd, &ps);

	return 0;
}

//
//	Win32 TextView window procedure.
//
LRESULT WINAPI TextViewWndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
	TextView *ptv = (TextView *)GetWindowLong(hwnd, 0);

	switch(msg)
	{
	// First message received by any window - make a new TextView object
	// and store pointer to it in our extra-window-bytes
	case WM_NCCREATE:

		if((ptv = new TextView(hwnd)) == 0)
			return FALSE;

		SetWindowLong(hwnd, 0, (LONG)ptv);
		return TRUE;

	// Last message received by any window - delete the TextView object
	case WM_NCDESTROY:

		delete ptv;
		return 0;

	// Draw contents of TextView whenever window needs updating
	case WM_PAINT:
		return ptv->OnPaint();

	default:
		break;
	}

	return DefWindowProc(hwnd, msg, wParam, lParam);
}

//
//	Register the TextView window class
//
BOOL InitTextView()
{
	WNDCLASSEX	wcx;

	//Window class for the main application parent window
	wcx.cbSize			= sizeof(wcx);
	wcx.style			= 0;
	wcx.lpfnWndProc		= TextViewWndProc;
	wcx.cbClsExtra		= 0;
	wcx.cbWndExtra		= sizeof(TextView *);
	wcx.hInstance		= GetModuleHandle(0);
	wcx.hIcon			= 0;
	wcx.hCursor			= LoadCursor (NULL, IDC_IBEAM);
	wcx.hbrBackground	= (HBRUSH)0;		//NO FLICKERING FOR US!!
	wcx.lpszMenuName	= 0;
	wcx.lpszClassName	= TEXTVIEW_CLASS;	
	wcx.hIconSm			= 0;

	return RegisterClassEx(&wcx) ? TRUE : FALSE;
}

//
//	Create a TextView control!
//
HWND CreateTextView(HWND hwndParent)
{
	return CreateWindowEx(WS_EX_CLIENTEDGE, 
		TEXTVIEW_CLASS, _T(""), 
		WS_VSCROLL |WS_HSCROLL | WS_CHILD | WS_VISIBLE,
		0, 0, 0, 0, 
		hwndParent, 
		0, 
		GetModuleHandle(0), 
		0);
}

Code:

//textview.h

#ifndef TEXTVIEW_INCLUDED
#define TEXTVIEW_INCLUDED

#ifdef __cplusplus
extern "C" {
#endif

//
//	TextView API declared here
//
BOOL InitTextView();
HWND CreateTextView(HWND hwndParent);

//
//	TextView Window Messages defined here
//

//
//	TextView Macros defined here
//
#define TEXTVIEW_CLASS _T("TextView32")
#define TXM_BASE         (WM_USER)
#define TXM_OPENFILE     (TXM_BASE + 0)

#define TextView_OpenFile(hwndTV, szFile) \
                  SendMessage((hwndTV), TXM_OPENFILE, 0, (LPARAM)(szFile))

#ifdef __cplusplus
}
#endif

#endif

Code:

//textviewinternal.h

#ifndef TEXTVIEW_INTERNAL_INCLUDED
#define TEXTVIEW_INTERNAL_INCLUDED

class TextView
{
public:

	TextView(HWND hwnd) : m_hWnd(hwnd) {}
	HWND	m_hWnd;
	int x;

	LRESULT WINAPI OnPaint();
};

#endif

**beene** · 10-17-2006

sorry if my post was to long

**beene** · 10-17-2006

i get a few errors when i compile, can anyone help me?

Code:

`OFN_ENABLESIZING' undeclared (first  use this function)

Code:

Neatpad.c invalid conversion from `void*' to ` HINSTANCE__*'

Code:

Neatpad.c invalid conversion from `void*' to ` HICON__*'

Code:

Neatpad.c invalid conversion from `void*' to ` HINSTANCE__*'

Code:

Neatpad.c invalid conversion from `void*' to ` HICON__*'

Code:

Neatpad.c [Warning] no newline at end of file

**Kurisu33** · 10-17-2006

Neatpad.c invalid conversion from `void*' to ` HINSTANCE__*'

I'm not sure off the top of my head, but perhaps some function is returning a void* and you need to type cast it before you assign it to something?!?!? Maybe..? I'm not sure.

i.e.

Code:

HINST hInst = (HINST*)someFunction();

**IfYouSaySo** · 10-17-2006

neatpad huh? I remember when I was in your shoes. Holy Christ. You've got a long way to go, my friend.

**Wraithan** · 10-17-2006

If you want to work on a project like this... check out www.emeraldeditor.com they are in need of programers who have the time to help out.

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