perl-win32-gui-users

Re: [perl-win32-gui-users] Rich text field

[Octavian R. <ora...@gm...>]

> From: "Jason Plum" <jp...@un...>
>
>
>> Hi,
>>
>> Yes, I believe it is quite possible, as unless I am mistaken, I have had
>> > 1MB loaded into a rich edit in one of my widely used programs.
>>
>> The easy way to test it would simply be to create it, and load in > 200KB 
>> of text from some file (or randomly even).
>> Try creating the richtext control and and a textfield. cycle it through 
>> say, 256 characters at a time, upping the value in the text field. This 
>> would give you a visual of where it dies, if it dies.
>>
>> Jason
>>

Hi,

I have already tried it, but I cannot store more than 32 KB of text in a 
Richedit field (using Win32::GUI::Richedit).
Those 32 kb of text takes around 48 kb of rich text, but it cannot store 
more than that.

I have tried using the Load() and Save() methods  and I have also tried 
creating the rich text manually and storing it in the field, but it doesn't 
allow more than 32 kb of text.

Thank you.

Octavian

Re: [perl-win32-gui-users] Rich text field

[Sean H. <jal...@ho...>]

> I have already tried it, but I cannot store more than 32 KB of text in=
 a
> Richedit field (using Win32::GUI::Richedit).
> Those 32 kb of text takes around 48 kb of rich text, but it cannot sto=
re
> more than that.
>
> I have tried using the Load() and Save() methods  and I have also trie=
d
> creating the rich text manually and storing it in the field, but it  =

> doesn't
> allow more than 32 kb of text.

Look at the Win32::GUI::RidhEdit methods GetLimittext(), SetLimitText(),=
  =

and LimiteText().

An unfortunate misspelling on that last one; perhaps that can be fixed i=
n  =

a future version - as of 1.05 it's still LimiteText instead of LimitText=
  =

Of course, both names may need to be kept for several versions, so as no=
t  =

to break any code that's using the misspelled version.

Here's some more info on the text size limit:

EM_LIMITTEXT Message

The EM_LIMITTEXT message sets the text limit of an edit control. The tex=
t  =

limit is the maximum amount of text, in TCHARs, that the user can type  =

into the edit control. You can send this message to either an edit contr=
ol  =

or a rich edit control.

For edit controls and Microsoft Rich Edit 1.0, bytes are used. For Rich =
 =

Edit 2.0 and later, characters are used.

Syntax

To send this message, call the SendMessage function as follows. lResult =
=3D  =

SendMessage( 	    // returns LRESULT in lResult
    (HWND) hWndControl, 	    // handle to destination control
    (UINT) EM_LIMITTEXT, 	    // message ID
    (WPARAM) wParam, 	    // =3D (WPARAM) () wParam;
    (LPARAM) lParam 	    // =3D 0; not used, must be zero
); 	=



Parameters
wParam
Specifies the maximum number of TCHARs the user can enter. For ANSI text=
,  =

this is the number of bytes; for Unicode text, this is the number of  =

characters. This number does not include the terminating null character.=


Rich edit controls: If this parameter is zero, the text length is set to=
  =

64,000 characters.

Edit controls on Windows NT/2000/XP: If this parameter is zero, the text=
  =

length is set to 0x7FFFFFFE characters for single-line edit controls or =
-1  =

for multiline edit controls.

Edit controls on Windows 95/98/Me: If this parameter is zero, the text  =

length is set to 0x7FFE characters for single-line edit controls or 0xFF=
FF  =

for multiline edit controls.
lParam
This parameter is not used.

Return Value
This message does not return a value.

Remarks

The EM_LIMITTEXT message limits only the text the user can enter. It doe=
s  =

not affect any text already in the edit control when the message is sent=
,  =

nor does it affect the length of the text copied to the edit control by =
 =

the WM_SETTEXT message. If an application uses the WM_SETTEXT message to=
  =

place more text into an edit control than is specified in the EM_LIMITTE=
XT  =

message, the user can edit the entire contents of the edit control.

Before EM_LIMITTEXT is called, the default limit for the amount of text =
a  =

user can enter in an edit control is 32,767 characters.

Edit controls on Windows NT/2000/XP: For single-line edit controls, the =
 =

text limit is either 0x7FFFFFFE bytes or the value of the wParam  =

parameter, whichever is smaller. For multiline edit controls, this value=
  =

is either -1 byte or the value of the wParam parameter, whichever is  =

smaller.

Edit controls on Windows 95/98/Me: For single-line edit controls, the te=
xt  =

limit is either 0x7FFE bytes or the value of the wParam parameter,  =

whichever is smaller. For multiline edit controls, this value is either =
 =

0xFFFF bytes or the value of the wParam parameter, whichever is smaller.=


Rich Edit: Supported in Rich Edit 1.0 and later. Use the message  =

EM_EXLIMITTEXT for text length values greater than 64,000. For informati=
on  =

about the compatibility of rich edit versions with the various system  =

versions, see About Rich Edit Controls.

Message InformationHeader	Declared in Winuser.h, include Windows.h
Minimum operating systems	Windows 95, Windows NT 3.1


See Also
Edit Controls Overview, EM_EXLIMITTEXT, WM_SETTEXT

Re: [perl-win32-gui-users] Rich text field

[Jason P. <jp...@un...>]

Nice! Thanks for the tip on the function, and the message parameters :)  
I'm sure some of us will be needing this in the future.

Sean Healy wrote:
>> I have already tried it, but I cannot store more than 32 KB of text in a
>> Richedit field (using Win32::GUI::Richedit).
>> Those 32 kb of text takes around 48 kb of rich text, but it cannot store
>> more than that.
>>
>> I have tried using the Load() and Save() methods  and I have also tried
>> creating the rich text manually and storing it in the field, but it  
>> doesn't
>> allow more than 32 kb of text.
>>     
>
> Look at the Win32::GUI::RidhEdit methods GetLimittext(), SetLimitText(),  
> and LimiteText().
>
> An unfortunate misspelling on that last one; perhaps that can be fixed in  
> a future version - as of 1.05 it's still LimiteText instead of LimitText  
> Of course, both names may need to be kept for several versions, so as not  
> to break any code that's using the misspelled version.
>
> Here's some more info on the text size limit:
>
> EM_LIMITTEXT Message
>
> The EM_LIMITTEXT message sets the text limit of an edit control. The text  
> limit is the maximum amount of text, in TCHARs, that the user can type  
> into the edit control. You can send this message to either an edit control  
> or a rich edit control.
>
> For edit controls and Microsoft Rich Edit 1.0, bytes are used. For Rich  
> Edit 2.0 and later, characters are used.
>
> Syntax
>
> To send this message, call the SendMessage function as follows. lResult =  
> SendMessage( 	    // returns LRESULT in lResult
>     (HWND) hWndControl, 	    // handle to destination control
>     (UINT) EM_LIMITTEXT, 	    // message ID
>     (WPARAM) wParam, 	    // = (WPARAM) () wParam;
>     (LPARAM) lParam 	    // = 0; not used, must be zero
> ); 	
>
>
> Parameters
> wParam
> Specifies the maximum number of TCHARs the user can enter. For ANSI text,  
> this is the number of bytes; for Unicode text, this is the number of  
> characters. This number does not include the terminating null character.
>
> Rich edit controls: If this parameter is zero, the text length is set to  
> 64,000 characters.
>
> Edit controls on Windows NT/2000/XP: If this parameter is zero, the text  
> length is set to 0x7FFFFFFE characters for single-line edit controls or -1  
> for multiline edit controls.
>
> Edit controls on Windows 95/98/Me: If this parameter is zero, the text  
> length is set to 0x7FFE characters for single-line edit controls or 0xFFFF  
> for multiline edit controls.
> lParam
> This parameter is not used.
>
> Return Value
> This message does not return a value.
>
> Remarks
>
> The EM_LIMITTEXT message limits only the text the user can enter. It does  
> not affect any text already in the edit control when the message is sent,  
> nor does it affect the length of the text copied to the edit control by  
> the WM_SETTEXT message. If an application uses the WM_SETTEXT message to  
> place more text into an edit control than is specified in the EM_LIMITTEXT  
> message, the user can edit the entire contents of the edit control.
>
> Before EM_LIMITTEXT is called, the default limit for the amount of text a  
> user can enter in an edit control is 32,767 characters.
>
> Edit controls on Windows NT/2000/XP: For single-line edit controls, the  
> text limit is either 0x7FFFFFFE bytes or the value of the wParam  
> parameter, whichever is smaller. For multiline edit controls, this value  
> is either -1 byte or the value of the wParam parameter, whichever is  
> smaller.
>
> Edit controls on Windows 95/98/Me: For single-line edit controls, the text  
> limit is either 0x7FFE bytes or the value of the wParam parameter,  
> whichever is smaller. For multiline edit controls, this value is either  
> 0xFFFF bytes or the value of the wParam parameter, whichever is smaller.
>
> Rich Edit: Supported in Rich Edit 1.0 and later. Use the message  
> EM_EXLIMITTEXT for text length values greater than 64,000. For information  
> about the compatibility of rich edit versions with the various system  
> versions, see About Rich Edit Controls.
>
> Message InformationHeader	Declared in Winuser.h, include Windows.h
> Minimum operating systems	Windows 95, Windows NT 3.1
>
>
> See Also
> Edit Controls Overview, EM_EXLIMITTEXT, WM_SETTEXT
>
>
> -------------------------------------------------------------------------
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> Download DB2 Express C - the FREE version of DB2 express and take
> control of your XML. No limits. Just data. Click to get it now.
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>
>
>   

Re: [perl-win32-gui-users] Rich text field

[Robert M. <rob...@us...>]

On 22/04/07, Sean Healy <jal...@ho...> wrote:
> > I have already tried it, but I cannot store more than 32 KB of text in a
> > Richedit field (using Win32::GUI::Richedit).
> > Those 32 kb of text takes around 48 kb of rich text, but it cannot store
> > more than that.
>
> Look at the Win32::GUI::RidhEdit methods GetLimittext(), SetLimitText(),
> and LimiteText().
>
> An unfortunate misspelling on that last one; perhaps that can be fixed in
> a future version - as of 1.05 it's still LimiteText instead of LimitText
> Of course, both names may need to be kept for several versions, so as not
> to break any code that's using the misspelled version.

I've added it to my list of things to fix.  I assume that's a French
spelling ...

You may also be interested in this thread from when we discussed this
issue back in February:

https://sourceforge.net/mailarchive/message.php?msg_id=45CD1523.2010609%40optonline.net

Regards,
Rob.

Re: [perl-win32-gui-users] Rich text field

[Octavian R. <ora...@gm...>]

Hi Sean,

Thank you for your help. I hope I will be able to do it.

Octavian

----- Original Message ----- 
From: "Sean Healy" <jal...@ho...>
To: <per...@li...>
Sent: Sunday, April 22, 2007 7:08 PM
Subject: Re: [perl-win32-gui-users] Rich text field


>> I have already tried it, but I cannot store more than 32 KB of text in a
>> Richedit field (using Win32::GUI::Richedit).
>> Those 32 kb of text takes around 48 kb of rich text, but it cannot store
>> more than that.
>>
>> I have tried using the Load() and Save() methods  and I have also tried
>> creating the rich text manually and storing it in the field, but it
>> doesn't
>> allow more than 32 kb of text.
>
> Look at the Win32::GUI::RidhEdit methods GetLimittext(), SetLimitText(),
> and LimiteText().
>
> An unfortunate misspelling on that last one; perhaps that can be fixed in
> a future version - as of 1.05 it's still LimiteText instead of LimitText
> Of course, both names may need to be kept for several versions, so as not
> to break any code that's using the misspelled version.
>
> Here's some more info on the text size limit:
>
> EM_LIMITTEXT Message
>
> The EM_LIMITTEXT message sets the text limit of an edit control. The text
> limit is the maximum amount of text, in TCHARs, that the user can type
> into the edit control. You can send this message to either an edit control
> or a rich edit control.
>
> For edit controls and Microsoft Rich Edit 1.0, bytes are used. For Rich
> Edit 2.0 and later, characters are used.
>
> Syntax
>
> To send this message, call the SendMessage function as follows. lResult =
> SendMessage(     // returns LRESULT in lResult
>    (HWND) hWndControl,     // handle to destination control
>    (UINT) EM_LIMITTEXT,     // message ID
>    (WPARAM) wParam,     // = (WPARAM) () wParam;
>    (LPARAM) lParam     // = 0; not used, must be zero
> );
>
>
> Parameters
> wParam
> Specifies the maximum number of TCHARs the user can enter. For ANSI text,
> this is the number of bytes; for Unicode text, this is the number of
> characters. This number does not include the terminating null character.
>
> Rich edit controls: If this parameter is zero, the text length is set to
> 64,000 characters.
>
> Edit controls on Windows NT/2000/XP: If this parameter is zero, the text
> length is set to 0x7FFFFFFE characters for single-line edit controls or -1
> for multiline edit controls.
>
> Edit controls on Windows 95/98/Me: If this parameter is zero, the text
> length is set to 0x7FFE characters for single-line edit controls or 0xFFFF
> for multiline edit controls.
> lParam
> This parameter is not used.
>
> Return Value
> This message does not return a value.
>
> Remarks
>
> The EM_LIMITTEXT message limits only the text the user can enter. It does
> not affect any text already in the edit control when the message is sent,
> nor does it affect the length of the text copied to the edit control by
> the WM_SETTEXT message. If an application uses the WM_SETTEXT message to
> place more text into an edit control than is specified in the EM_LIMITTEXT
> message, the user can edit the entire contents of the edit control.
>
> Before EM_LIMITTEXT is called, the default limit for the amount of text a
> user can enter in an edit control is 32,767 characters.
>
> Edit controls on Windows NT/2000/XP: For single-line edit controls, the
> text limit is either 0x7FFFFFFE bytes or the value of the wParam
> parameter, whichever is smaller. For multiline edit controls, this value
> is either -1 byte or the value of the wParam parameter, whichever is
> smaller.
>
> Edit controls on Windows 95/98/Me: For single-line edit controls, the text
> limit is either 0x7FFE bytes or the value of the wParam parameter,
> whichever is smaller. For multiline edit controls, this value is either
> 0xFFFF bytes or the value of the wParam parameter, whichever is smaller.
>
> Rich Edit: Supported in Rich Edit 1.0 and later. Use the message
> EM_EXLIMITTEXT for text length values greater than 64,000. For information
> about the compatibility of rich edit versions with the various system
> versions, see About Rich Edit Controls.
>
> Message InformationHeader Declared in Winuser.h, include Windows.h
> Minimum operating systems Windows 95, Windows NT 3.1
>
>
> See Also
> Edit Controls Overview, EM_EXLIMITTEXT, WM_SETTEXT
>
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by DB2 Express
> Download DB2 Express C - the FREE version of DB2 express and take
> control of your XML. No limits. Just data. Click to get it now.
> http://sourceforge.net/powerbar/db2/
> _______________________________________________
> Perl-Win32-GUI-Users mailing list
> Per...@li...
> https://lists.sourceforge.net/lists/listinfo/perl-win32-gui-users
> http://perl-win32-gui.sourceforge.net/