C / C++ / MFC

Steve S23-Aug-05 23:54

Steve S

23-Aug-05 23:54

What format are the saved images in?
If they are BMP,JPEG,GIF you can use the OLE picture support to render them, and you could derive from CStatic to make your own picture box, or use something like the one from MSDN done by Paul DiLascia (spelling?)

Steve S
Developer for hire!

Barm24-Aug-05 0:01

Barm

24-Aug-05 0:01

The images are .bmp,

I have a picture control, CStatic m_StillPic

I've tried using m_StillPic.SetBitmap() but without success.

Can you explain the parameter inside SetBitmap(),
where do I put the path to the file?

Thanks

Hamed Musavi24-Aug-05 1:19

Hamed Musavi

24-Aug-05 1:19

Hi,
If m_stillPic is a StaticCtrl & your BMP path is "C:\\Pic.bmp" :

HBITMAP hBitmap = (HBITMAP) ::LoadImage(AfxGetInstanceHandle(),<br />
  _T("C:\\Pic.bmp"), IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE | LR_CREATEDIBSECTION);<br />
<br />
if (hBitmap) m_stillPic.SetBitmap(hBitmap);<br />
m_stillPic.UpdateWindow();

Re: CheckBox control problem

Achim Klein24-Aug-05 8:14

Achim Klein

24-Aug-05 8:14

Hi,

create a CStatic control and choose type 'rectangle'.
Use the following code to draw into that window.

void DrawBitmap(CBitmap* pBitmap, CWnd* pWindow, CPoint Offset)
{
	// get bitmap information
	BITMAP bmpInfo;
	pBitmap->GetObject(sizeof(bmpInfo), &bmpInfo);

	// get source size
	CSize srcSize;
	srcSize.cx = bmpInfo.bmWidth;
	srcSize.cy = bmpInfo.bmHeight;

	// get window's client device context
	CClientDC* pDC = new CClientDC(pWindow);

	// create compatible divice context for stretching
	CDC* memDC = new CDC; memDC->CreateCompatibleDC(pDC);

	// load bitmap in original size
	CBitmap* old = memDC->SelectObject(pBitmap);

	// copy bitmap data
	pDC->BitBlt(Offset.x, Offset.y, srcSize.cx, srcSize.cy, memDC, 0, 0, SRCCOPY);

	// reselect first bitmap
	memDC->SelectObject(old);

	// delete device context and reset pointer
	delete memDC; memDC = 0;

	// delete device context and reset pointer
	delete pDC; pDC = 0;
}

Regards

If I have seen further, it is by standing on the shoulders of giants.
Isaac Newton

CheckBox control problem

Mukhan23-Aug-05 22:43

Mukhan

23-Aug-05 22:43

Hi All,

I am simply adding a checkbox control in my MFC application.... after the addition of this control the application doesnt start at all... and when i remove the checkbx control, the application works perfectly.... .

Can anyone suggest the reason .... or solution to this problem ?

Thanks in advance...
mukhan

Rage23-Aug-05 22:48

Re: CheckBox control problem

23-Aug-05 22:48

Mukhan wrote:
adding

Can you shortly describe how you did that ? What kind of MFC App is it ? Simply added the checkbox in the dialog editor, recompiled, and then it does not start anymore ? In Debug Mode ?

~RaGE();

Mukhan23-Aug-05 23:02

Mukhan

23-Aug-05 23:02

Hi,

Its an MFC application which is getting the data from CAN bus and one thread is runnning for to get data from one PCI I/O Card.... MFC is used only for GUI. One check box is added and is been defined as CButton and BOOL in class wizard .... the same thing i did for another application which is used to get the data from xPC Target (RTOS) over TCP/IP connection... there the checkbox is working perfectly....

CButton m_check_save;
BOOL m_check_save_1;

I havent done any operation with this BOOL yet ... i just want to perform an operation if this checkbox is checked......
like
if(m_check_save_1){
// do this this .....
....
}

I am compiling it and then trying to start the application in debug mode....

Have a look now ..... Wink | ;)

File Transfer Using UDP

yccheok23-Aug-05 22:17

yccheok

23-Aug-05 22:17

currently, i have a large amount of data to be processed. hence, i decide to distribute the work load through several computers within LAN. i get some TCP code through code project to perform data transfer, they work well.

however, speed during the transfer is my major concern. i know TCPis slower than UDP. i plan to use UDP. i was wondering is there any code example on UDP file transfer? yup, by using winsock, not MFC. i don't want my system heavily depend on MFC.

thank you very much!

Re: File Transfer Using UDP

Alexander ^M.,23-Aug-05 22:37

Alexander ^M.,

23-Aug-05 22:37

UDP file transfers are difficult to handle, because you have to create a re-send routine for dropped packets... you should use TCP if possible. It's much easier!

Don't try it, just do it! Wink | ;-)

Re: File Transfer Using UDP

Nemanja Trifunovic24-Aug-05 2:51

Nemanja Trifunovic

24-Aug-05 2:51

Before you go for UDP, try to improve performance by using TransmitFile[^] API call.

My programming blahblahblah blog. If you ever find anything useful here, please let me know to remove it.

Re: File Transfer Using UDP

yccheok24-Aug-05 15:50

yccheok

24-Aug-05 15:50

I check the TrasmitFile API already. They use connection oriented instead of connectionless socket Frown | :(

I try my own implementation on UDP. Not so easy Frown | :(

Most of the time, the speed of data being trasfered can be faster than the speed of data being received. Hence, if I send out 4GB, the client may only receive 1GB if the client is slow. I may implement some flow control, however, end of the day, seem like I am just re-inventing wheel Frown | :(

autofill script for login box

joshuatree23-Aug-05 21:22

joshuatree

23-Aug-05 21:22

Hullo,
For something to quell my boredom and learn MFC, I was trying to come up with a way using MFC to enter my name and password into login boxes. What I wanted to do was have my application displaying two text boxes for my name and password with a button that when clicked would enter my name and password from the text boxes into another applications login box.
I have read about sendmessage(), but will say, Outlook allow or even be listening for this? I just need some general pointers as to which method of IPC would be best. Take it easy on me, I'm still in the early stages of MFC. Smile | :)

Rage23-Aug-05 22:01

23-Aug-05 22:01

I am not sure if we can answer you about that, since this would be the door open to write bruteforce password breakers, if you can follow my thoughts. Unsure | :~

Sorry for that.

~RaGE();

Cedric Moonen23-Aug-05 22:19

Cedric Moonen

23-Aug-05 22:19

Hello,
I think I understand what you want to do: you want your application that will 'remember' your password (or something like that) and when pressing the button of your application, it will fill the login and password boxes from an application.

Ok, that's nice but there are some major problems in that: first, how will your program know to which running application it must send the information ? And also, the ID's of the edit boxes (if this is always edit boxes, could be also something else) will change from applications to applications so you have no way to identify them (I may be wrong on that point as I never did that kind of things).

To respond to your question: yes, Outlook will receive the messages, it is not really 'listening' but you post messages directely in the message queue of the application so they will be processed like any other message.

Jose Lamas Rios24-Aug-05 8:32

Jose Lamas Rios

24-Aug-05 8:32

Take a look here: Sending Keystrokes to Any App [...][^]

--
jlr
http://jlamas.blogspot.com/[^]

joshuatree24-Aug-05 15:42

joshuatree

24-Aug-05 15:42

Outstanding! Thanks for your help, and for being able to see through my weak explanation of where I wanted to go.

I'll post a screen shot of what i came up with later.

thanks Jose

What control to use?

Ali Tavakol23-Aug-05 19:59

Ali Tavakol

23-Aug-05 19:59

I want to report something in a control similar to that in "Add or Remove Programs" of Windows control panel.
it has a list, containig all installed programs. each item of the list has some text, buttons and underlined text, multiline, and also size of each item when clicking, becomes wider.
what control is better to use?
can all of this features achieved?

Re: What control to use?

Rage23-Aug-05 22:13

23-Aug-05 22:13

Ali Tavakol wrote:
it has a list

Here you have it allready : I think this is a (very)derived CListView. You will have to custom draw it, and add some controls in each line (CEdit for the text, CButtons and so on).

But all this is feasible.

~RaGE();

Re: What control to use?

Rage23-Aug-05 23:29