C / C++ / MFC Discussion Boards

Ravi Bhavnani5-Aug-02 3:37

5-Aug-02 3:37

David Wulff wrote:
Could I do something like

Yes, that will work (but will also cause Parent.Frame() to be invoked twice). You can easily get around this problem by passing the current frame id in the call. Each Frame() method can ignore the call (i.e. do nothing) if it's already been invoked for this frame.

/ravi

Let's put "civil" back into "civilization"
http://www.ravib.com
ravib@ravib.com

Re: OO design question

Tomasz Sowinski4-Aug-02 23:51

Tomasz Sowinski

4-Aug-02 23:51

The problem you're facing is a classic. Some people call it 'dreaded diamond hierarchy'. I'd recommend reading 'Effective C++' by Scott Meyers; item 43 could shed some light.

Tomasz Sowinski -- http://www.shooltz.com

What is "scratch" and why can everything be made from it?

Re: OO design question

David Wulff5-Aug-02 1:22

David Wulff

5-Aug-02 1:22

Hi Tomasz, thanks for the recomendation - I'll add it to my huge list of things to buy when I have the cash. Smile | :)

David Wulff
http://www.davidwulff.co.uk

One 18yrs male, red and white, good condition; daily servicing required. £500 collect ono.

using CBitmapButton

Mavrock4-Aug-02 11:58

Mavrock

4-Aug-02 11:58

I am a very new programmer and Visual C++ 6.0 is the first programming I have been learning. I am not very familiar with the terminology. I am trying to put a bitmap on a button using the CBitmapButton function. However I am getting the error "error C2065: 'pParentWnd' : undeclared identifier".

I don't know what 'pParentWnd' means or how to declare it.

Thank you.
Stone

Re: using CBitmapButton

Ravi Bhavnani4-Aug-02 15:00

Ravi Bhavnani

4-Aug-02 15:00

Hard to say without seeing your code. OMG | :OMG:

/ravi

Let's put "civil" back into "civilization"
http://www.ravib.com
ravib@ravib.com

Getting selected text globally

Christian Skovdal Andersen4-Aug-02 11:19

Christian Skovdal Andersen

4-Aug-02 11:19

Hi,

I have noticed that some programs can get the contents of a selection, and do something with it one a global hotkey is pressed.

Some of them are spell checkers that will spellcheck the selected word in almost any application, some of them are telephony applications that will try to dial the selected text as a telephone number.

Does anybody know how to do this?

I have tried to get numerous samples, including the PC Magazine Robotype, but this program only knows which text that has been written.

Any help would be greatly appreciated!

Thank you for reading this far Wink | ;-)

Christian Skovdal Andersen

Re: Getting selected text globally

Tomasz Sowinski5-Aug-02 0:07

Tomasz Sowinski

5-Aug-02 0:07

To get HWND, use GetForegroundWindow (not GetActiveWindow). Then, you can check if it's edit or richedit control, and if this is the case, grab the text with EM_GETSEL.

Tomasz Sowinski -- http://www.shooltz.com

What is "scratch" and why can everything be made from it?

Re: Getting selected text globally

Gene Yu14-Jan-03 8:56

Gene Yu

14-Jan-03 8:56

Glad to see your response. I have been looking for an answer to a similar question for a while! Can you tell me how to get to the selected text if the foreground window is not itself a edit control or richedit control but contains such controls? What about accessing a selected text in IE browser? Would appreciate very much your answers to these questions!

Gene Yu - gene4yu@yahoo.com

Default font set for window's dialogs

CaesarCZ4-Aug-02 10:28

CaesarCZ

4-Aug-02 10:28

Hi!
I need to know the font's the user has set (Desktop - Right Mouse Button ->Properties->Third tab from left... I'm doing a custom control and need the font's to share the common appearance

Re: Default font set for window's dialogs

pépé5-Aug-02 2:18

pépé

5-Aug-02 2:18

Something like :

<br />
SystemParametersInfo(SPI_GETNONCLIENTMETRICS, 0, &ncm, 0);<br />
hFont = CreateFontIndirect(&ncm.lfCaptionFont);<br />

There are other fonts in ths struct, I don't know which one you need.

Scrollbar size

CaesarCZ4-Aug-02 10:22

CaesarCZ

4-Aug-02 10:22

Hi anybody can help me figuring out how to learn the scroll bars "arrow buttons" size? I need to use these and user paint ALL the stuff in between as well as handle all the mouse input. How can I get the exact size of these arrow?

Thanks

Re: Scrollbar size

PJ Arends4-Aug-02 12:40

PJ Arends

4-Aug-02 12:40

SystemParametersInfo() should give you that information. Probably the SPI_GETNONCLIENTMETRICS action.

CPUA 0x5041

Sonork 100.11743 Chicken Little

"So it can now be written in stone as a testament to humanities achievments "PJ did Pi at CP"." Colin Davies

Within you lies the power for good - Use it!

Re: Scrollbar size

alex.barylski4-Aug-02 16:51

alex.barylski

4-Aug-02 16:51

GetSystemMetrics()

"An expert is someone who has made all the mistakes in his or her field" - Niels Bohr

Open Filename dialog won't show.

redeemer4-Aug-02 8:43

redeemer

4-Aug-02 8:43

I'm trying to show an Open File dialog but it won't show and i can't figure out what i'm doing wrong, here's the code:

{
	OPENFILENAME ofn;
	char szFileNames[(MAX_PATH+1)*1000+2];
	const char szFilter[] = "MP3 Files (*.mp3)\0" "*.mp3\0";

	szFileNames[0] = 0;
	ofn.lStructSize = sizeof(OPENFILENAME);

	ofn.hwndOwner = ghWnd;
	ofn.lpstrFilter = szFilter;
	ofn.lpstrCustomFilter = (LPSTR)NULL;
	ofn.nFilterIndex = 1;
	ofn.lpstrFile = szFileNames;
	ofn.nMaxFile = sizeof(szFileNames);
	ofn.lpstrFileTitle = NULL;
	ofn.lpstrTitle = (LPSTR)NULL;
	ofn.Flags = OFN_ENABLESIZING | OFN_FILEMUSTEXIST | OFN_HIDEREADONLY | OFN_PATHMUSTEXIST | OFN_ALLOWMULTISELECT | OFN_EXPLORER;
	ofn.nFileOffset = 0;
	ofn.nFileExtension = 0;
	ofn.lpstrDefExt = "mp3";
 
	GetOpenFileName(&ofn);

Thanks in advance

-Rune Svendsen

Re: Open Filename dialog won't show.

Pavel Klocek4-Aug-02 10:06

Pavel Klocek

4-Aug-02 10:06

The dialog shows O.K. for me. The only diference was I tested it with hwndOwner set to NULL. Is the owner window (ghWnd) valid and displayed window?

Sonork 100.15206;PavelK

How to link msvcr70.dll into my program in VC++.net

tfElep4-Aug-02 8:40

tfElep

4-Aug-02 8:40

I'm making a little program using VC++.net these days. But when I run my program(.EXE) on a computer without VC++.net installed, it asks for msvcr70.dll, so that I have to put this DLL together with that program. This troubles me a lot. The Property Sheet of my project has been checked carefully, what else could I do?

Thanks a lot for any hint.

Tiny Flying Elephant loves flying...

Re: How to link msvcr70.dll into my program in VC++.net

Philip Patrick4-Aug-02 9:10

Philip Patrick

4-Aug-02 9:10

Well, they have to have .NET framework installed. It can be downloaded from Microsoft[^]

Philip Patrick
Web-site: www.stpworks.com
"Two beer or not two beer?" Shakesbeer

Re: How to link msvcr70.dll into my program in VC++.net

2sky4-Aug-02 9:44

2sky

4-Aug-02 9:44

You can deploy your program using the Deployment Wizard in Visual Studio, then merge the VC++ Redistributable Merge Module with you setup files.

Re: How to link msvcr70.dll into my program in VC++.net

2sky4-Aug-02 9:48

2sky

4-Aug-02 9:48

The Visual C++ merge module can be found in \Program Files\Common Files\Merge Modules

There you choose the vc_crt.msm file (200KB)...

Printing in Landscape

Desmond Mardle4-Aug-02 7:17

Desmond Mardle

4-Aug-02 7:17

:|I am still having trouble trying to print in landscape. Below is my latest code which does not print or change the page to landscape. Any suggestion would be appreciated. I think I feel like a mouse going around in circles.

The code seems to give me a new device context but it does not seem to print.

void CLogbookView::OnPrint(CDC* pDC, CPrintInfo* pInfo)
{
pDC = SetLandscape(pDC);

pDC->TextOut(100,100,"test");
}

CDC* CLogbookView::SetLandscape(CDC* pDC)
{
BOOL bStdSetUpDlg = TRUE;

CWnd *pWnd = this;

CPrintDialog pPrintDialog(bStdSetUpDlg,PD_USEDEVMODECOPIES ,pWnd);
pPrintDialog.GetDefaults();

LPDEVMODE pDEVMODE = pPrintDialog.GetDevMode();
pDEVMODE->dmOrientation = DMORIENT_LANDSCAPE;

pDC->m_hDC = pPrintDialog.CreatePrinterDC();

return pDC;
}

Desmond Mardle

Re: Printing in Landscape

Roger Allen4-Aug-02 9:28

Roger Allen

4-Aug-02 9:28

Take a look at my article www.codeproject.com/printing/printerselect.asp

It covers switch landscape/portatit mode and a host of other features

If your still stuck, e-mail me direct.

Roger Allen
Sonork 100.10016

If I had a quote, it would be a very good one.

question about new and delete[]

nss4-Aug-02 6:37

nss

4-Aug-02 6:37

I have

_variant_t tempkeyValue = new _variant_t[20];

but when I go to do

delete[] tempkeyValue;

I get the error:

C:\Trainer\DB2\DbClass.cpp(204) : error C2440: 'delete' : cannot convert from 'class _variant_t' to ''.Ambiguous user-defined-conversion.

How can I get rid of the pointer fter I'm through with it?

Thanks,
ns

Re: question about new and delete[]

Pavel Klocek4-Aug-02 6:48

Pavel Klocek

4-Aug-02 6:48

You need a pointer variable Wink | ;)

:
_variant_t *tempkeyValue = new _variant_t[20];

Sonork 100.15206;PavelK

Re: question about new and delete[]

nss4-Aug-02 7:24

nss

4-Aug-02 7:24

Oops!So I did. The weird thing is. my code actually worked without declaring it a pointer, except for the delete.

Now I have:

  _variant_t *tempkeyValue = new _variant_t[20];
		
//	 tempkeyValue = (char *) (_bstr_t) m_pRecordset->Fields->GetItem (key)->Value; 
	*tempkeyValue =  m_pRecordset->Fields->GetItem (key)->Value; 


	strcpy(keyValue,(char *) (_bstr_t)*tempkeyValue);
	AfxMessageBox((char *) (_bstr_t)*tempkeyValue);
	AfxMessageBox((char *) (_bstr_t)m_pRecordset->Fields->GetItem (key)->Value);

	delete[] tempkeyValue;

which is fine, but I had:

  _variant_t tempkeyValue = new _variant_t[20];
		
//	 tempkeyValue = (char *) (_bstr_t) m_pRecordset->Fields->GetItem (key)->Value; 
	tempkeyValue =  m_pRecordset->Fields->GetItem (key)->Value; 


	strcpy(keyValue,(char *) (_bstr_t)tempkeyValue);
	AfxMessageBox((char *) (_bstr_t)tempkeyValue);
	AfxMessageBox((char *) (_bstr_t)m_pRecordset->Fields->GetItem (key)->Value);

//	delete[] tempkeyValue;  crashed here

and it gave the right values in both messageboxes.

Is that to be expected or some weird coincidence?

Apprecite your reply tremendously. I was starting to thing _variant_t varaiables were a different beast as far as delete goes...
Blush | :O

Re: question about new and delete[]

Philippe Mori5-Aug-02 7:23

Philippe Mori

5-Aug-02 7:23

This is a side-effect of conversions (1 argument) constructors and conversions operators...

A _variant_t can be converted to a VARIANT * implicitly by the defined conversion operator and this allows some misuse to go undetected...

Conversion operators are cool in general but very dangerous particulary when the returns pointers to internal data.

Philippe Mori

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