[RESOLVED] CEditView

[Feoggou]

in a text editor, like in a CEdit, there is a little clipping bar that shows the position, where you type characters. Can anybody tell me what is its name, how can I control it, and how can I remove it from my CEditView?

[VictorN]

It is the caret .
To control it: CEdit::GetSel/SetSel (CEdit::ReplaceSel).
I don't know how to remove it any other way than move the focus on the other window. Why do you want to remove caret from the edit control?

[laitinen]

Maybe you can use HideCaret function: CWND::HideCaret()

Regards,

Laitinen

[Feoggou]

I want only to display text, and it looks bad having it permanently at the begining of the first line. I was thinking about caret, but any function I tried, didn't do anything... so I said it isn't it...

can you tell me how to work with it? Why every function I've tried with it didn't have any effect?

[VictorN]

Maybe you can use HideCaret function: CWND::HideCaret()

Good point! I didn't know about HideCaret/ShowCaret methods (cause I never needed them)!

[Feoggou]

I found it! I think...

every time the window gets a WM_SETFOCUS message, it creates the caret. I have created, hidden, showed in MyView::OnSetFocus() and now it works! I think I'm right!

[ovidiucucu]

Just a little curious. Why do you need to hide caret in an edit control?
AFAIK, it isn't put there for nothing...

[Feoggou]

I need only to display text in the view, not to write in it too...

[ovidiucucu]

I need only to display text in the view, not to write in it too...

That case, just make it read-only.
Note that hiding the caret does not prevent user to write in.

[laitinen]

I need only to display text in the view, not to write in it too...

Then you should just set the readOnly property to true.


Regards,

Laitinen

[ovidiucucu]

Then you should just set the readOnly property to true.

Hmmm... I'm wondering who can find such a "property" for MFC's CEditView...

Well, to be more specific myself.
CEditView encapsulates an edit control and has a method "GetEditCtrl" that returns a reference to the corresponding CEditCtrl object.
So, to make an edit view read-only, you have to do something like in the next example (here in the WM_CREATE message handler).

int CMyEditView::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
   if (CEditView::OnCreate(lpCreateStruct) == -1)
      return -1;

   GetEditCtrl().SetReadOnly();
   
   return 0;
}

[Feoggou]

I don't like that if I put it ReadOnly, the view turns gray.

But, what I have tried:
If I handle the WM_CHAR message, and delete the CEditView::OnChar(nChar, nRepCnt, nFlags) function, I cannot write in view. And, a better ideea than this, I can handle the WM_SETFOCUS message, so every time the message is sent, the focus should be sent to something else, so I cannot write in view.

Mabey turning the view as ReadOnly is a good ideea, but I don't like it to be gray, and I don't know how to change its color. I think it can be changed...

Anyway, thanks to all!

[ovidiucucu]

I don't like that if I put it ReadOnly, the view turns gray.

But, what I have tried:
[...]

Please, please, stop running around tail!
I know, the default background color for a read-only edit control is gray, but it's no any sweat to change it according to what your muscles want.
Just handle WM_CTLCOLOR message and return the desired (color) brush handle (in the case of CEditView handle "=WM_CTLCOLOR" reflected message).
Here is an example turning the background back to white:

HBRUSH CMyEditView::CtlColor(CDC* pDC, UINT nCtlColor) 
{
   // TODO: Change any attributes of the DC here
   // TODO: Return a non-NULL brush if the parent's handler should not be called
   // return NULL;
   return (HBRUSH)::GetStockObject(WHITE_BRUSH);
}

[Feoggou]

Yes, it worked!

but, I've got one more question... I don't understand this: the CTLCOLOR message looks like =WM_CTLCOLOR... and so, what's the difference between a message with "=" and one without?

like "WM_SETFOCUS" and "=WM_SETFOCUS". when I've tried to handle the "=WM_SETFOCUS" message it didn't do anything, but "WM_SETFOCUS" worked...

[ovidiucucu]

I was 99.999998% sure that's the next question...

Well, I hope is pretty clear what's Message Reflection for Windows Controls in MSDN.