Re: Help in Generating Reports - C / C++ / MFC Discussion Boards

vancouver7772-Oct-03 5:55

2-Oct-03 5:55

I hae problem registering my ocx. So I am trying
to debug it using regsvr32 sample program available
at microsoft.com. Does anyone know how to debug using
this regsvr32 program?

Shin

Re: regsvr32 sample debugging

sdfdsfa2-Oct-03 6:06

sdfdsfa

2-Oct-03 6:06

I just figured out!!

Thanks

Re: regsvr32 sample debugging

vancouver7772-Oct-03 7:11

vancouver777

2-Oct-03 7:11

Sorry..
I figured out how to use it..but i don't know the problem
I am getting ctlreg.cpp line 502 assertion error. seemslike
it won't let me trace that deep. If I am getting this error,
where should I look at. any help is appreciated!

shin

Re: regsvr32 sample debugging

igor19602-Oct-03 7:49

igor1960

2-Oct-03 7:49

Obviously, Look at MFC\SRC\CTLREG.CPP line 502...

"...Ability to type is not enough to become a Programmer. Unless you type in VB. But then again you have to type really fast..."
Me

Re: regsvr32 sample debugging

vancouver7772-Oct-03 10:32

vancouver777

2-Oct-03 10:32

Thanks for your posting. Is there anyway that
I can put the break point here?

Shin

Re: regsvr32 sample debugging

sdfdsfa2-Oct-03 11:00

sdfdsfa

2-Oct-03 11:00

This time it's real. I figure out all!!
No problem registrying the ocx.

Thank you very much!!!!!

Help in Generating Reports

TheFox2-Oct-03 5:13

TheFox

2-Oct-03 5:13

I have a Windows VC++ SDI Application that gathers and process data.

All I want to do is generate a report from data I have collected!!!.

I want to be able to generate a report when I select ‘Generate Report’. (And NOT File -> New)

I also want to be able to Print the report.

I have now idea how to do it.

Please help me.

Re: Help in Generating Reports

G. Steudtel2-Oct-03 5:37

G. Steudtel

2-Oct-03 5:37

Hi,
probaly the easiest approach is before saving your data, you transform the data into a CStringArray. That is for every data you need report you transform this data into a textual representation (CString) and add it to the array.
Then you may store the array into a file. If you take care that a line is not too long, then you may also print that array line by line. Do a heighth calualtion and divide the paper length by this height to get the number of pages to print.
Your application framework should alredy have the appropriate Print(Preview) functions installed.

If you do NOT want to select File New, rename it.

Regards

G. Steudtel

Re: Help in Generating Reports

TheFox2-Oct-03 5:52

TheFox

2-Oct-03 5:52

No it's worse that that, I don't understand how I can get the code to write text to the screen.

I think you need to pretend that I don't understand VC++!!!

Re: Help in Generating Reports

G. Steudtel2-Oct-03 6:28

G. Steudtel

2-Oct-03 6:28

Hi,

well, never mind in the last century I was in the same situation.
But to tell in detail what you should do and not would be a lengthy excursion by space and by time.
I have written an article "Documenting header files" and posted it here at codeproject [^]in the source code you will find a method to put some datas into strings and display and print them. The same method is also used to store the datas.
If you download the source files have a look at the BeginPrinting OnPrint functions in the ViewHeaderDocumentor.cpp file.
The other parts of interest are in DocHeaderDocumenter the OnSave... routines and the MakeOutput... routines. Those routines call other (helper)routines until a CStringArray is filled.
I guess it will take a couple of hours until you get an idea of how it's working, but i will.

Regards

G. Steudtel

buttons requiring passwords

PaulUK012-Oct-03 4:47

PaulUK01

2-Oct-03 4:47

Hi guys. Can anyone tell me how I can restrict certain users from having access to certain buttons on my dialog? Since this is a one-off, I'd simply like to have the button in question require a password to activate?

Thanks

Paul

Paul

Re: buttons requiring passwords

David Crow2-Oct-03 6:16

David Crow

2-Oct-03 6:16

If the button in question is on a dialog, then you can simply call the button's EnableWindow() method in the dialog's OnInitDialog() method.

BOOL CMyDialog::OnInitDialog()
{
    CDialog::OnInitDialog();
 
    m_SomeButton.EnableWindow(...);
 
    return TRUE;
}

Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?

Re: buttons requiring passwords

Navin2-Oct-03 6:46

Navin

2-Oct-03 6:46

What I would do is, say you have a button that performs some functionality that requires a password. In yoru button handler, it might go something like this:

void SomeWindow::Button1Click()
{
  Pop up a dialog asking for username/passwordd.
  if(!DoSomeFunction(username, password))
  {
     AfxMessageBox("Nice try, buddy!");
  }
}

..
bool DoSomeFunction(username, password)
{
  check username and password
  If incorrect, return false
  Else do the forbidden function and return true
}

You can tweak this as necessary. Somebody else suggested just using EnableWindow(FALSE) on the button. That isn't good because somebody who really wants that functionality (and who can resist trying to hack into something, just because it is password protected?) can use an external program to send Windows messages to enable and click the button. If you have the password check in the function doing the restricted functionality, you can't crack it except by knowing the password or disassembling the code.

If your nose runs and your feet smell, then you're built upside down.

Re: buttons requiring passwords

PaulUK012-Oct-03 7:36

PaulUK01

2-Oct-03 7:36

I hadn't thought of that, thanks.

Close a view during OnDraw

CodeBrain2-Oct-03 4:06

CodeBrain

2-Oct-03 4:06

I have a question regarding the closing of a CView during a paint message.

I want to send a close message to a view during its OnDraw(CDC*) method. Is it guaranteed that the OnDraw method will finish before the view processes the close message if I send it using PostMessage in my OnDraw code?

Thanks in advance.

Re: Close a view during OnDraw

Mike Dimmick2-Oct-03 4:12

Mike Dimmick

2-Oct-03 4:12

Yes. PostMessage appends the message to the queue of posted messages. SendMessage waits for a response (turns into a recursive call on the same thread).

Re: Close a view during OnDraw

CodeBrain3-Oct-03 0:36

CodeBrain

3-Oct-03 0:36

OK, thank you. That was what I have expected.

Changing the color of PUSH button at runtime

venkyhyd2-Oct-03 3:49

venkyhyd

2-Oct-03 3:49

hey
I have come across an application were i need to change the color of the PUSH Button at run time...

Eg:
I have got some hardware interface like KeyBoard were i'll Depict the KeyBoard in my MFC. If i click the key on my Keyboard of my hardware then I have to dynamically show the change in the MFC also.

so how do i do...

venky

Re: Changing the color of PUSH button at runtime

Mike Dimmick2-Oct-03 4:11

Mike Dimmick

2-Oct-03 4:11

CButton::SetState in the OnKeyDown and OnKeyUp handlers, I expect.

Re: Changing the color of PUSH button at runtime

vcplusplus2-Oct-03 7:49

vcplusplus

2-Oct-03 7:49

Maybe this can help you.
Here is an example I used for a text box.

Override WM_CTLCOLOR message

HBRUSH CMyProgramView::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor) 
{
	HBRUSH hbr = CFormView::OnCtlColor(pDC, pWnd, nCtlColor);
	
	INT nIDCtl = pWnd->GetDlgCtrlID();
	switch(nIDCtl)
	{
	case IDC_TEXT_BOX: 
		if (!m_strTextBox.IsEmpty())
		{
			// Change background color to white so that the
			// text is easier to read.
			pDC->SetBkColor(RGB(255, 255, 255));
			CBrush br;
			br.CreateSolidBrush(RGB(255, 255, 255));
			hbr = (HBRUSH)br;
			br.Detach();
		}
                // else
                // use default background color
		break;
        }
	return hbr;
}

How to prevent "Screen Capture" ?

jajamal2-Oct-03 3:38

jajamal

2-Oct-03 3:38

Hello,I am interrested in "Windows Media Player Technorogy".
There is "prevent screen capture by user" .

The WMP play a MPEG file.
The user push "Print Screen" key,and copy to clipboad.
but the part of picture in clipboad is black.

I want to realize that function.

I researched around "WM_PRINT" and callback function.
but I can't.

Is there any solution? Cry | :((

Re: How to prevent "Screen Capture" ?

jhwurmbach2-Oct-03 4:47

jhwurmbach

2-Oct-03 4:47

Is it the reaction to WM_COPY? Or is WMP constantly checking the clipboard?

BTW. This is one of the reasons why I never use WMP - sorry Redmond! Roll eyes | :rolleyes:

Who is 'General Failure'? And why is he reading my harddisk?!?

Re: How to prevent "Screen Capture" ?

jajamal2-Oct-03 5:09

jajamal

2-Oct-03 5:09

I want to create the below function.

for example,
My Aplication draw only the circle.
The user push the "print screen" key.
But The picture of my aplication's view is black.

And,,,

I think that WMP doesn't constantly chacking the clipboad.

Re: How to prevent "Screen Capture" ?

igor19602-Oct-03 8:55

igor1960

2-Oct-03 8:55

One of possible soultion that I'm coming with would be:
1. register one of your hidden windows as ClipBoard viewer, so when capture happens you'll get WM_DRAWCLIPBOARD message (see SetClipboardViewer());
2. on receiving WM_DRAWCLIPBOARD you may look into content and somehow figure out if bitmap(metafile) is something coming from your drawing window (based on size for example and or some other specific features) or maybe empty clipboard always when there is bitmap/metafile in it;
3. If it's you -- post message to your main wnd that will empty clipbrd...
...

"...Ability to type is not enough to become a Programmer. Unless you type in VB. But then again you have to type really fast..."
Me

Re: How to prevent "Screen Capture" ?

Blake Coverett2-Oct-03 10:13

Blake Coverett

2-Oct-03 10:13

This is not actually something WMP does intentionally, it is just an artifact of using overlay surfaces from the video driver. You can do this yourself using DirectDraw. You can't do it with GDI.

--
-Blake (com/bcdev/blake)

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.