C / C++ / MFC

19-Oct-09 18:57

Anyone know how to edit the labels of the TreeCntrl and add userdata in the tree.

theCPkid19-Oct-09 19:10

theCPkid

19-Oct-09 19:10

What's TreeCntrl? Do you mean CTreeCtrl?

ratprita19-Oct-09 19:11

19-Oct-09 19:11

yes, CTreeCntrl

theCPkid19-Oct-09 19:22

theCPkid

19-Oct-09 19:22

CTreeCntrl or CTreeCtrl? Smile | :)

Anyway, check [this] tutorial on using CTreeCtrl.
For editing labels, SetItemText should work?? What problem are you facing?

ratprita19-Oct-09 19:30

19-Oct-09 19:30

Not adding items to the CTreeCntrl. My problem is that , i have an editable tree, ie, i have checked the edit labels option.i want to know how to accept the label change on the tree. Means how to set the changed label?

theCPkid19-Oct-09 19:44

theCPkid

19-Oct-09 19:44

I am sorry if I could not get you but do you mean how to edit the labels from user point of view?
If it's so, click on the item to select it and then single click again and an in-place edit box will open. D'Oh! | :doh:

If you mean as a programmer, then you get BeginLabelEdit and endlabel edit messages, you can get the item text, set the item text, get current selection etc etc?
something like

void CMyTreeCtrl::OnEndLabelEdit(LPNMHDR pnmhdr, LRESULT *pLResult)
{
	TV_DISPINFO     *ptvinfo;
	ptvinfo = (TV_DISPINFO *)pnmhdr;
	if (ptvinfo->item.pszText != NULL)
	{
		ptvinfo->item.mask = TVIF_TEXT;
		SetItem(&ptvinfo->item);
	}
	*pLResult = TRUE;
}

ratprita19-Oct-09 20:17

check if type is defined using preprocessor?

19-Oct-09 20:17

Thanks a lot. Its working now

Sauce!19-Oct-09 18:37

Sauce!

19-Oct-09 18:37

I enjoy using types such as UINT as an alternative to unsigned int, which is all well and good if I have windows code in my project, however I have to manually define this in other projects that dont use any windows code. what I'd like to know is if it's possible to do something along the lines of the following...

#ifdef UINT
typedef UINT unsigned int;
#endif

I have a feeling that code doesn't do what I want, so I'm asking, does it, or doesn't it?

Re: check if type is defined using preprocessor?

Rajesh R Subramanian19-Oct-09 18:50

Rajesh R Subramanian

19-Oct-09 18:50

These datatypes are defined in Windef.h. Therefore,

#ifndef _WINDEF_
typedef unsigned int UINT;
#endif

“Follow your bliss.” – Joseph Campbell

Re: check if type is defined using preprocessor?

Sauce!19-Oct-09 19:00

Sauce!

19-Oct-09 19:00

thanks, that will do nicely Smile | :)

Need help for CStdioFile or CFile

Nicholas Amh19-Oct-09 16:29

Nicholas Amh

19-Oct-09 16:29

Hi all, is there anyway to write ("%d %lf %lf %lf\n", psn[i], px[i], py[i], pz[i]) into a CStdioFile or CFile? I also wish to know for read function.

CStdioFile test;
test.Write("%d %lf %lf %lf\n", psn[i], px[i], py[i], pz[i]);
test.Read(("%d %lf %lf %lf\n", psn[i], px[i], py[i], pz[i]);

How can i do read and write in thoes format?

Please help me out. Thanks alot.

«_Superman_»19-Oct-09 16:39

«_Superman_»

19-Oct-09 16:39

You first need to convert it to a string and then write the string.

CStdioFile file(_T("C:\\test.txt"), CFile::modeReadWrite);
CString text;

text.Format(_T("%d %lf %lf %lf\n"), psn[i], px[i], py[i], pz[i]);
file.WriteString(text, text.GetLength());

file.ReadString(text);

«_Superman_»
I love work. It gives me something to do between weekends.

Microsoft MVP (Visual C++)

Nicholas Amh19-Oct-09 17:10

Nicholas Amh

19-Oct-09 17:10

Thanks for replied. It's can't work. My output result is all wrong.

Iain Clarke, Warrior Programmer

Iain Clarke, Warrior Programmer19-Oct-09 23:08

19-Oct-09 23:08

I agree with Superman's reply to you, so you need to give more information than "all wrong".

When you use the debugger, was the contents of the intermediate string object correct?

If so, is the text file full of the right stuff, but with NULL's in between? In which case you have a unicode vs ascii issue.

"All wrong" is bad answer to just about anything, whether it's a coding question, or from your doctor.

Iain.

I have now moved to Sweden for love (awwww).
If you're in Scandinavia and want an MVP on the payroll (or happy with a remote worker), or need contract work done, give me a job! http://cv.imcsoft.co.uk/[^]

Darken Windows Desktop and draw normal brightness moveable rectangle [modified]

Nicholas Amh19-Oct-09 23:39

Nicholas Amh

19-Oct-09 23:39

Thanks. I've solved it.

Neville Franks19-Oct-09 13:06

Re: Darken Windows Desktop and draw normal brightness moveable rectangle [modified]

19-Oct-09 13:06

Hi, I am trying to work out how to darken the Windows Desktop and then display a rectangular portion of the desktop normally (not darkened). This is for a screen area capture program. You can see the precise effect I am after in Jing http://www.jingproject.com/[^].

I understand how to make a window transparent, but that's not what I'm after.

Fading the background in a Web page is also commonly done. Any tips/pointers/C++ source much appreciated. Google has not helped so far.

Neville Franks, Author of Surfulater www.surfulater.com "Save what you Surf" and ED for Windows www.getsoft.com

modified on Monday, October 19, 2009 10:33 PM

Adam Roderick J19-Oct-09 17:50

Adam Roderick J

19-Oct-09 17:50

To do this, Firstly capture the desktop image.
then do the following steps.
1. Draw the captured image.
2. Draw the invererted image of captured image over it.
some vc++ code snippet to help you:-

void OnDraw( CDC* pDC_i )
{
        if( 0 != m_NormalImage )
        {
            CDC MemDc;
            MemDc.CreateCompatibleDC( pDC_i );
            CImage  *pOldImage = MemDc.SelectObject( m_NormalImage );
            CRect rect;
            GetClientRect( &rect );
            rect.left = HEADER_OFFSET;
            rect.right = max( rect.Width(), 300 ) + HEADER_OFFSET;
            rect.top = HEADER_OFFSET;
            rect.bottom = HEADER_OFFSET + HEADER_HEIGHT ;
            COLORREF CurrentBkgd = pDC_i->SetBkColor( IMAGE_HEADER_BKGDCOLOR );
            pDC_i->SetBkColor( CurrentBkgd );
            pDC_i->BitBlt( 0, HEADER_OFFSET + HEADER_HEIGHT + HEADER_OFFSET , m_nWidth, HEADER_OFFSET + m_nHeight + HEADER_HEIGHT + HEADER_OFFSET, 
                           &MemDc, 0, 0, SRCCOPY );
            if( m_bInvertStatus && 0 != m_pInverseImage )
            {
                DrawInverseImage( pDC_i );
                
            }
            MemDc.SelectObject( pOldImage );
            MemDc.DeleteDC();
        }
}



void SetInvertImage( HBITMAP himageinverse_i)
{
       m_pinverseImage = new CBitmap();
       m_pinverseImage->Attach( himageinverse_i);
}

void DrawInvertImage( CDC* pDC_i )
{
        if( 0 !=m_pinverseImage )
        {
            CDC Memdc;
            Memdc.CreateCompatibleDC( pDC_i );
            CBitmap  *pOldBitmap = dcMem.SelectObject(m_inverseImage );
            pDC_i->BitBlt( 0, HEADER_OFFSET + HEADER_HEIGHT + HEADER_OFFSET, m_nWidth, HEADER_OFFSET + m_nHeight + HEADER_HEIGHT + HEADER_OFFSET, 
                           &dcMem, 0, 0, SRCINVERT );
            dcMem.SelectObject( pOldBitmap );
            dcMem.DeleteDC();        
        }
}

Now screen will be fully black.
3. Now make the inverted image part as transparent of your wish, just refer this article.([^])
I think your task is achieved

Величие не Бога может быть недооценена.

modified on Tuesday, October 20, 2009 12:02 AM

Re: Darken Windows Desktop and draw normal brightness moveable rectangle

Neville Franks19-Oct-09 23:48

Re: Darken Windows Desktop and draw normal brightness moveable rectangle

19-Oct-09 23:48

Thanks all. Capturing the desktop as an image and then altering that seems like the way forward. I've been researching GDI+ and the Effect Class, and I plan on trying the BrightnessContrast Class tomorrow. I'll draw the normal rectangle area using the original desktop image. And use a window layered over the top of the desktop. Sounds like a plan.

Neville Franks, Author of Surfulater www.surfulater.com "Save what you Surf" and ED for Windows www.getsoft.com

Naveen19-Oct-09 18:20

Naveen

19-Oct-09 18:20

Neville Franks wrote:
I understand how to make a window transparent, but that's not what I'm after.

I think you can do this by creating one window in the excat size of the desktop. In the erase background function first fill the background of dialog with black color. After that bitblt the content of the desktop DC to the dialog( try the SRCPAINT flag in the bitblt ). Now after that paint the rectangle that you want to show without darkening using bitblt again( this time specify SRCCOPY in it ).

nave

[OpenedFileFinder] [My Blog]

Re: Darken Windows Desktop and draw normal brightness moveable rectangle

Neville Franks19-Oct-09 23:50

Re: Darken Windows Desktop and draw normal brightness moveable rectangle

19-Oct-09 23:50

Thanks, see my reply to ARJ 09 above.

Neville Franks, Author of Surfulater www.surfulater.com "Save what you Surf" and ED for Windows www.getsoft.com

Iain Clarke, Warrior Programmer19-Oct-09 23:05

Iain Clarke, Warrior Programmer

19-Oct-09 23:05

As the other replies said, the trick is to take a snapshot of the desktop, then put a window on top using that image.

To make the area outside your selection be a bit darker, rather than black, I used GDI+:

In the following, I've already attached a Graphics object to a HDC, pts is an array of PointF's, and nPoints is the size of that array.
You could just make a rectangular exclude-from-shading area too, of course.

CRect rcClient;
GetClientRect (&rcClient);

Color clrBrush (128,0,0,0);
SolidBrush brush (clrBrush);

GraphicsPath path;
path.AddPolygon (pts, nPoints);

Region region (Rect (rcClient.left, rcClient.top, rcClient.Width (), rcClient.Height ()));
region.Exclude (&path);

gfx.FillRegion (&brush, ®ion);

This does the effect over the whole of a window - your window will probably be larger than mine, but the point remains.

I hope that helps,

Iain.

Re: Darken Windows Desktop and draw normal brightness moveable rectangle

Neville Franks19-Oct-09 23:51