Re: Wizards and Radio Buttons... - C / C++ / MFC Discussion Boards

Andy Hunter13-Dec-04 8:55

13-Dec-04 8:55

I am using DirectX 9 with VS.Net 2002. When I call the Direct3DCreate9 macro I recieve an unresolved external error when the project links. I have included the platform sdk lib and include files as part of my .net setup and they are both at the top of the list. I am unsure of why I am recieving this error. Any help will be much appreciated.

Re: DirectX Init problem

Verolix13-Dec-04 14:50

Verolix

13-Dec-04 14:50

Did you include d3d9.lib? If that doesn't help, include d3dx9.lib.

Re: DirectX Init problem

Andy Hunter14-Dec-04 2:57

Andy Hunter

14-Dec-04 2:57

Thankyou for the help. Evidently I wasn't including the libraries in the right area in the project setup. Once I moved everything over to the additional dependencies area it all seemed to work out. I appreciate the help.

Playing sound help

rikkemus13-Dec-04 8:54

rikkemus

13-Dec-04 8:54

I have made my own compressed sound format, and i wish to play it as i decompress it back to pcm format.

The problem is this.

I wanna play them on the fly, as i decompress the music. Each music frame decompressed is 256 samples.

So a compressed music file, consists of alot of frames.

The few methods i have found to play music, requires a buffer to the entire length of the PCM data. Since that would require alot of ram, i see that as a problem, besides the fact, that it decompresses the entire file then plays the music.

Wizards and Radio Buttons...

tpbzdw13-Dec-04 8:02

tpbzdw

13-Dec-04 8:02

I'm having a great deal of trouble with a Wizard97 design...

Briefly, Page 2 of the Wizard has 3 Radio Buttons.

Clicking "Next" takes you to page 3.

But how do I know what Radio Button was clicked from Page 2?

I would like to attach my code to this message, but I don't see how to do it. (?)

The code is very simple, but just doesn't seem to work and I can't see why it won't work!
Cry | :((

Re: Wizards and Radio Buttons...

toxcct13-Dec-04 8:17

toxcct

13-Dec-04 8:17

if (((CButton*)GetDlgItem(IDC_MY_RADIO1))->GetCheck() == BS_CHECKED) {
    // IDC_MY_RADIO1 is checked, otherwise, another is...
}

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Re: Wizards and Radio Buttons...

tpbzdw13-Dec-04 9:25

tpbzdw

13-Dec-04 9:25

I wish it would work that way, but alas, it doesn't. Frown | :(

I keep getting an error message...

c:\Projects\Simple Wizard\Wizard.cpp(299): error C2039: 'GetChecked' : is not a member of 'CWnd'

Re: Wizards and Radio Buttons...

Antony M Kancidrowski13-Dec-04 9:57

Antony M Kancidrowski

13-Dec-04 9:57

The function you are looking for is GetCheck()

it returns one of BST_UNCHECKED, BST_CHECKED or BST_INDETERMINATE

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fruity and sweet.
I'm jelly, what am I? Muse on it further, I shall return! - David Walliams (Little Britain)

Re: Wizards and Radio Buttons...

tpbzdw13-Dec-04 10:14

tpbzdw

13-Dec-04 10:14

Now I get...

c:\Projects\Simple Wizard\WC_Wizard.cpp(295): error C2039: 'GetCheck' : is not a member of 'CWnd'
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\atlmfc\include\afxwin.h(1913) : see declaration of 'CWnd'

Re: Wizards and Radio Buttons...

Antony M Kancidrowski13-Dec-04 10:50

Antony M Kancidrowski

13-Dec-04 10:50

Why not break the code down into easier to read lines:

CButton* pButton = (CButton*)GetDlgItem(IDC_MY_RADIO1);
ASSERT(pButton != NULL);

if (pButton->GetCheck() == BST_CHECKED)
{
}

It always helps to breakdown the code.

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fruity and sweet.
I'm jelly, what am I? Muse on it further, I shall return! - David Walliams (Little Britain)

Re: Wizards and Radio Buttons...

toxcct14-Dec-04 4:45

toxcct

14-Dec-04 4:45

first, a made an error on the function, but someone else correct the mistake for me.

secondly, GetCheck() is a member of CButton, not CWnd...
if stdafx.h is included into your project, you shouldn't encounter such error (C2039).

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Re: Wizards and Radio Buttons...

Antony M Kancidrowski13-Dec-04 10:00

Antony M Kancidrowski

13-Dec-04 10:00

You are missing an open bracket at the start of the if statement. Smile | :)

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fruity and sweet.
I'm jelly, what am I? Muse on it further, I shall return! - David Walliams (Little Britain)

Re: Wizards and Radio Buttons...

toxcct14-Dec-04 4:33

toxcct

14-Dec-04 4:33

Antony M Kancidrowski wrote:
You are missing an open bracket at the start of the if statement

correct... and corrected Big Grin | :-D

but you understood what i would like to explain, isn't it ? Wink | ;)

TOXCCT >>> GEII power
[toxcct][VisualCalc]

MFC ListControl

RaymondM13-Dec-04 7:10

RaymondM

13-Dec-04 7:10

I would like to set the listcontrol so that items (in the first column) *cannot* be selected. This can be done in a listbox, but is there any way to fix a listcontrol to behave this way ?
Thanks in advance,

Raymond Mercier

SuperTank13-Dec-04 6:36

SuperTank

13-Dec-04 6:36

Hey,
Well a short question realy.
What does the ^ do in C++?

example:
int number = 0;
number ^= 1;

the output for number is 1. When in math would be 0.

Thanks.

humpa humpa

Re: ^?

toxcct13-Dec-04 6:45

toxcct

13-Dec-04 6:45

^ is the bitwise exclusive-or operator

SO :

   0x1100
 ^ 0x1010
-----------
 = 0x0110

that's why
number ^= 1;
means
number = number ^ 1;
means
number = 0 ^ 1; // == 1

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Re: ^?

SuperTank13-Dec-04 6:46

SuperTank

13-Dec-04 6:46

I see. Thanks for your quick answer.

humpa humpa

Re: ^?

PJ Arends13-Dec-04 6:51

PJ Arends

13-Dec-04 6:51

http://www.codeproject.com/cpp/bitbashing.asp[^]

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

"Obviously ??? You're definitely a superstar!!!" mYkel - 21 Jun '04

Within you lies the power for good - Use it!

Getting text from an edit box

aaadetos13-Dec-04 6:25

aaadetos

13-Dec-04 6:25

Hi,
I'm using the following code to try to get a double variable from an edit box, but I keep getting an error: c2660

<br />
    double x=0;<br />
    CString strx;<br />
        ......<br />
<br />
        for(int i=0;i<K,i++)<br />
{<br />
::GetDlgItemText(IDC_WELLRAD,strx);//Error c2660<br />
x=atof((LPCTSTR)strx);<br />
...<br />
}

How can I fix this error, please? what is HWND hdlg??

Re: Getting text from an edit box

Antony M Kancidrowski13-Dec-04 6:49

Antony M Kancidrowski

13-Dec-04 6:49

aaadetos wrote:
what is HWND hdlg??

Is the handle to the dialog window.

Assuming you are running this code in a CDialog derived class.
You could try something like this:

HWND hWndDlg = GetSafeHwnd();

You can then use this to get the handle to the control.

HWND hWndCtrl = ::GetDlgItem(hWndCtrl, IDC_WELLRAD);

Then use the control handle with GetWindowText()

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fruity and sweet.
I'm jelly, what am I? Muse on it further, I shall return! - David Walliams (Little Britain)

Re: Getting text from an edit box

aaadetos13-Dec-04 7:15

aaadetos

13-Dec-04 7:15

I'm sorry. Please see the revised code: i meant to type: GetDlgItemText, not GetDlgItem. the function in which I'm using GetDlgItemText is not in the CDialog class. How would I use GetSafeHwnd() then?

Re: Getting text from an edit box

Antony M Kancidrowski13-Dec-04 9:42

Antony M Kancidrowski

13-Dec-04 9:42

The easiest way is to have a pointer to your dialog class within the class that you have the code.

Header file

CMyDialog* m_pMyDialog;

CPP file

HWND hWnd = m_pMyDialog->GetSafeHwnd();

etc...

IMPORTANT: Note that you need to set m_pMyDialog to point at your dialog class before using it.

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fruity and sweet.
I'm jelly, what am I? Muse on it further, I shall return! - David Walliams (Little Britain)

Re: Getting text from an edit box

toxcct13-Dec-04 7:42

toxcct

13-Dec-04 7:42

CString strEdit;
((CEdit*)GetDlgItem(IDC_MY_EDIT))->GetWindowText(strEdit);

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Re: Getting text from an edit box

Antony M Kancidrowski13-Dec-04 9:47

Antony M Kancidrowski

13-Dec-04 9:47

You do not need to cast to CEdit as CWnd will do Smile | :)

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fruity and sweet.
I'm jelly, what am I? Muse on it further, I shall return! - David Walliams (Little Britain)

Re: Getting text from an edit box

aaadetos13-Dec-04 14:45

aaadetos

13-Dec-04 14:45

[Perplexed!]
I already tried to do the following:

<br />
{<br />
...<br />
	CString strx;<br />
	CDialog *pDialog;<br />
<br />
	pDialog -> GetDlgItemText(IDC_WELLRAD,strx);	<br />
	x = atof((LPCTSTR)strx);<br />
...<br />
}

and toxcct's code as well. The first gave an ASSERT error while the other gave an unhandled exception in mfc42d.dll, in wincore.cpp ->C:\...\MFC\SRC\WINCORE.CPP at the line *** below:

<br />
		HWND hWnd = ::GetDlgItem(m_hWnd, nID);<br />
		if (hWnd != NULL)<br />
		{<br />
			int nLen = ::GetWindowTextLength(hWnd);<br />
			::GetWindowText(hWnd, rString.GetBufferSetLength(nLen), nLen+1);//***<br />
			rString.ReleaseBuffer();<br />
		}<br />

I'm trying to get the value of an edit box for use in a function outside CDialog, which would carry out computations on the value entered by a user. I don't understand why i get these errors.

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