I have written a small text editor based RichEdit control (see text below). Program can open and save any file but when I open some large file (size > 32K) I can't insert into the text any symbol (but can delete and replace text!).
May be somebody know what I am doing wrong and what's my problem?
Thanks, Mike.
**************** The beginning of RichEdit.asm *********************************
.386
.model flat,stdcall
option casemap:none
WinMain proto :DWORD,:DWORD,:DWORD,:DWORD
include \masm32\include\windows.inc
include \masm32\include\user32.inc
include \masm32\include\kernel32.inc
include \masm32\include\gdi32.inc
include \masm32\include\comdlg32.inc
includelib \masm32\lib\user32.lib
includelib \masm32\lib\kernel32.lib
includelib \masm32\lib\gdi32.lib
includelib \masm32\lib\comdlg32.lib
EditML PROTO :DWORD,:DWORD,:DWORD,:DWORD,:DWORD,:DWORD,:DWORD,:DWORD
.const
IDM_OPEN equ 1
IDM_SAVE equ 2
IDM_EXIT equ 9
MAXSIZE equ 260
MEMSIZE equ 65535
EditID equ 1
CFM_BACKCOLOR equ 04000000h
.data
ClassName db "Win32ASMEditClass",0
AppName db "Small Text Editor",0
EditClass db "edit",0
MenuName db "FirstMenu",0
ofn OPENFILENAME <>
FilterString db "All files",0,"*.*",0
db "Text files",0,"*.txt",0,0
buffer db MAXSIZE dup(0)
bytesread dd 0
.data?
hInstance HINSTANCE ?
CommandLine LPSTR ?
hREdit HWND ?
hFile HANDLE ?
hMemory HANDLE ?
pMemory DWORD ?
SizeReadWrite DWORD ?
EditS EDITSTREAM >
cf CHARFORMAT2 <>
.code
start:
invoke GetModuleHandle, NULL
mov hInstance,eax
invoke GetCommandLine
invoke WinMain, hInstance,NULL,CommandLine, SW_SHOWDEFAULT
invoke ExitProcess,eax
WinMain proc hInst:HINSTANCE,hPrevInst:HINSTANCE,CmdLine:LPSTR,CmdShow:DWORD
LOCAL wc:WNDCLASSEX
LOCAL msg:MSG
LOCAL hwnd:HWND
mov wc.cbSize,SIZEOF WNDCLASSEX
mov wc.style, CS_HREDRAW or CS_VREDRAW
mov wc.lpfnWndProc, OFFSET WndProc
mov wc.cbClsExtra,NULL
mov wc.cbWndExtra,NULL
push hInst
pop wc.hInstance
mov wc.hbrBackground,COLOR_WINDOW+1
mov wc.lpszMenuName,OFFSET MenuName
mov wc.lpszClassName,OFFSET ClassName
invoke LoadIcon,NULL,IDI_APPLICATION
mov wc.hIcon,eax
mov wc.hIconSm,eax
invoke LoadCursor,NULL,IDC_ARROW
mov wc.hCursor,eax
invoke RegisterClassEx, addr wc
INVOKE CreateWindowEx,WS_EX_CLIENTEDGE,ADDR ClassName,ADDR AppName,\
WS_OVERLAPPEDWINDOW,\
100,100,600,400,\
NULL,NULL,hInst,NULL
mov hwnd,eax
INVOKE ShowWindow, hwnd,SW_SHOWNORMAL
INVOKE UpdateWindow, hwnd
.WHILE TRUE
INVOKE GetMessage, ADDR msg,NULL,0,0
.BREAK .IF (!eax)
INVOKE TranslateMessage, ADDR msg
INVOKE DispatchMessage, ADDR msg
.ENDW
mov eax,msg.wParam
ret
WinMain endp
WndProc proc uses ebx hWnd:HWND, uMsg:UINT, wParam:WPARAM, lParam:LPARAM
.IF uMsg==WM_CREATE
invoke EditML,NULL,0,30,300,200,hWnd,700,0
mov hREdit, eax
invoke SetFocus,hREdit
mov ofn.lStructSize,SIZEOF ofn
push hWnd
pop ofn.hwndOwner
push hInstance
pop ofn.hInstance
mov ofn.lpstrFilter, OFFSET FilterString
mov ofn.lpstrFile, OFFSET buffer
mov ofn.nMaxFile,MAXSIZE
.ELSEIF uMsg==WM_SIZE
mov eax,lParam
mov edx,eax
shr edx,16
and eax,0ffffh
invoke MoveWindow,hREdit,0,0,eax,edx,TRUE
.ELSEIF uMsg==WM_DESTROY
invoke PostQuitMessage,NULL
.ELSEIF uMsg==WM_COMMAND
mov eax,wParam
.if lParam==0
.if ax==IDM_OPEN
call OpenF
.elseif ax==IDM_SAVE
call SaveF
.else
invoke DestroyWindow, hWnd
.endif
.endif
.ELSE
invoke DefWindowProc,hWnd,uMsg,wParam,lParam
ret
.ENDIF
xor eax,eax
ret
WndProc endp
EditML proc szMsg:DWORD,tx:DWORD,ty:DWORD,wd:DWORD,ht:DWORD,
hParent:DWORD,ID:DWORD,Wrap:DWORD
LOCAL hCtl :DWORD
LOCAL hFnt :DWORD
LOCAL eStyle :DWORD
jmp @F
richedit db 'RICHEDIT',0
RichEdDLL db 'RICHED
After you create your Edit control you need to set the text size.
INVOKE SendMessage, hREdit, EM_EXLIMITTEXT, 0, 2000000 ; Or to whatever size you want.
Ewayne
Hi,
be careful with the maximum size, there are some riched20.dll
versions, which are limited to 1MByte size. The INFINITE constant
described in some documentation doesnt work with all dll
versions.
beaster.
Many people also include an updated dll with there programs. Remember windows always searches for Dll's in the application directory first, then \Program Files\Common\ then in \windows\system\ then in all of the directories in the path variable.
So if you place the newest RichEdit.Dll in your app's directory it will use that one first, just make sure it works on all OS's (Does nt or 2k require a special DLL? I'm not sure.)
See ya,
Ben