C / C++ / MFC

11-Jul-08 1:50

CFile deals with any kind of files where CStdioFile deals with TEXT files by default with an implicit convertion of newline character 0x0a into a pair of (0x0d and 0x0a)
The two methods, WriteString and ReadString provided in CStdioFile class assumes the delimiters of each line in the file as CRLF and newline. It can also be used for binary files as well, but certain functionality provided by CFile like Duplicate(), LockRange() etc are not supported in CStdioFile.

Control Panel

shakils11-Jul-08 0:55

shakils

11-Jul-08 0:55

If any body can quide me how can Control Panel designing (PC Interfacing) can be done in VC++. Any website or book for designing Control Panels to interface periferals to computer and control them and to collect data for manual test purpose please.

David Crow11-Jul-08 2:56

David Crow

11-Jul-08 2:56

Are you wanting to know how to create a Control Panel applet?

"Love people and use things, not love things and use people." - Unknown

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

shakils14-Jul-08 3:04

shakils

14-Jul-08 3:04

Actually I know designing window of control panels, I need to know programming for coms interfacing and data retrieving from external pariferals connected to PC by I2C or RS232. If you know any helping website or book please?

David Crow14-Jul-08 8:18

David Crow

14-Jul-08 8:18

Read from and write to serial ports using ReadFile() and WriteFile().

"Love people and use things, not love things and use people." - Unknown

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

load a bitmap to Picture Box from a path in database field

shakils17-Jul-08 2:44

shakils

17-Jul-08 2:44

Thanks a lot for help. It gave me a good clue.

Waguih11-Jul-08 0:37

Re: load a bitmap to Picture Box from a path in database field

11-Jul-08 0:37

hi every body
can you help me with this
how can I get a bitmap from a path in a database field
in a static picture box in the form view
I am using visaul studioC++ ver 6
thanks

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Varghese Paul M11-Jul-08 0:50

Re: load a bitmap to Picture Box from a path in database field

11-Jul-08 0:50

Is the problem with reading the path from database or loading and displaing the image or both ?

Waguih12-Jul-08 3:21

Re: load a bitmap to Picture Box from a path in database field

12-Jul-08 3:21

you see the program consider the field as a string
so how I tell him this is a file path not a string
becuse he fill the other Edit boxes with strings from
the other fields but for the picture box I gave him a static
variable and I use the loadimage and Bitblt but nothing
shown in the picture box

Waguih12-Jul-08 3:32

Re: load a bitmap to Picture Box from a path in database field

12-Jul-08 3:32

here is my code I hope you tell me what is wrong with it?
void CFilmsView::OnActivateView(BOOL bActivate, CView* pActivateView, CView* pDeactiveView)
{
// TODO: Add your specialized code here and/or call the base class

CDaoRecordView::OnActivateView(bActivate, pActivateView, pDeactiveView);
//CPaintDC dc(this);
CClientDC dc(this);
HBITMAP bmpHandle = (HBITMAP)LoadImage(NULL,strPictureName,IMAGE_BITMAP,
0,0,LR_COPYFROMRESOURCE);
CBitmap bmpPicture;
CDC mdcPicture;
CBitmap *bmpFromHandle = bmpPicture.FromHandle(bmpHandle);

CRect rctPicture;
m_Picture1.GetWindowRect(&rctPicture);

mdcPicture.CreateCompatibleDC(&dc);
CBitmap * bmpPrevious = mdcPicture.SelectObject(bmpFromHandle);

ScreenToClient(&rctPicture);

dc.BitBlt(rctPicture.left, rctPicture.top,
rctPicture.Width(), rctPicture.Height(),
&mdcPicture, 0, 0, SRCCOPY);

dc.SelectObject(bmpPrevious);
//DeleteObject(bmpHandle);

CPallini11-Jul-08 0:54

CPallini

11-Jul-08 0:54

What have you done so far?
What are your troubles about?
(i.e. Please be more specific)
Smile | :)

Re: load a bitmap to Picture Box from a path in database field

Waguih12-Jul-08 3:37

Setup & related for EVC application

12-Jul-08 3:37

I gave the picture box a static control
the program fill all the Edit box aith the string variables I gave him but for the picture box he treated the field as a string not a file path here is my code hope you can tell me what is wrong with it
void CFilmsView::OnPaint()
{
strPictureName=m_pSet->m_P1;
strPictureName=("E:\\BMP\\Hany\\Jimy1.bmp");
CPaintDC dc(this); // device context for painting

// TODO: Add your message handler code here

// TODO: Add your control notification handler code here
HBITMAP bmpHandle = (HBITMAP)LoadImage(NULL,strPictureName,IMAGE_BITMAP,
0,0,LR_LOADFROMFILE);
LoadBitmap(0,strPictureName);
CBitmap bmpPicture;
CDC mdcPicture;
CBitmap *bmpFromHandle = bmpPicture.FromHandle(bmpHandle);

CRect rctPicture;
m_Picture1.GetWindowRect(&rctPicture);

mdcPicture.CreateCompatibleDC(&dc);
CBitmap * bmpPrevious = mdcPicture.SelectObject(bmpFromHandle);

ScreenToClient(&rctPicture);

dc.BitBlt(rctPicture.left, rctPicture.top,
rctPicture.Width(), rctPicture.Height(),
&mdcPicture, 0, 0, SRCCOPY);

dc.SelectObject(bmpPrevious);
DeleteObject(bmpHandle);
// Do not call CDaoRecordView::OnPaint() for painting messages
}

Trupti Mehta11-Jul-08 0:29

Trupti Mehta

11-Jul-08 0:29

Hi,

I have developed an application in eVc++4 on ARMV4I device. At present the application is ready adn in testing phase. Before handing over the final version, I want to know how to do the following:
1) The user should able to start the application only once i.e. if the application is already running, the user shouldn't be able to open another time the application.
2) Create a setup for the application. I want to restrict the setup being used only 3 times. Creating shortcut on desktop will be handled with the setup.
3) Add the application in the start up.

Any helpline and guidance for the above is highly appreciated.

Thanks

Terry

Tree Control

john563210-Jul-08 23:58

john5632

10-Jul-08 23:58

I have build an application somewhat same to windows explorer.
LeftView inheriting from TreeView and RightView from ListView..right

LeftView captures Expanding message:
ON_NOTIFY_REFLECT(TVN_ITEMEXPANDING, OnTvnExpanding)

But how can I get the HTREEITEM of expanding tree item.

e.g.
When we select a tree item we can get it using
HTREEITEM Item=TreeCtrl.GetSelectedItem();

But in case of expanding how can I get it?

Re: Tree Control

Varghese Paul M11-Jul-08 0:38

Re: Tree Control [modified]

11-Jul-08 0:38

MPTP wrote:
When we select a tree item we can get it using
HTREEITEM Item=TreeCtrl.GetSelectedItem();

When you expand a node, it has to be selected or it will be selected before it expands or collaps.
So the same method TreeCtrl.GetSelectedItem(); should work inside the message handler.

Re: Tree Control

john563211-Jul-08 0:43

john5632

11-Jul-08 0:43

But in explorer it should not be like this?
It mean I can not get the HTREEITEM at time of expanding tree item right?

Varghese Paul M11-Jul-08 0:54

Changing bitmap of CBitmapButton

11-Jul-08 0:54

You can try casting the pNMHDR into a pointer to NMTREEVIEW structure, where the structure members itemOld and itemNew will be populated with the Old and New states of the item.

modified on Friday, July 11, 2008 7:06 AM

Re: Tree Control

Mark Salsbery11-Jul-08 5:48

Mark Salsbery

11-Jul-08 5:48

Varghese_Paul_M wrote:
When you expand a node, it has to be selected or it will be selected before it expands or collaps.

No no no

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

AnithaSubramani10-Jul-08 23:49

AnithaSubramani

10-Jul-08 23:49

Hi all,

I need to change the bitmap of the CbitmapButton on the events GetFocus, LostFocus and also in Clicked event. The problem I am facing is that, when I change the bitmap during GetFocus the bitmap is not loaded properly and when I use a breakpoint and debug the code the bitmap changed correctly. I dont know how to use it.

Also I tried to create a custom class for CBitmapButton and used it. In this I cannot set the bitmap to a particular button.

Please help me.

Re: Changing bitmap of CBitmapButton

Varghese Paul M11-Jul-08 0:43