C / C++ / MFC Discussion Boards

Jason Hooper20-Mar-02 22:23

20-Mar-02 22:23

I've found this MSDN page* that helps us with the transition.

* opens in new win

- Jason
Do you have a Pulse?
SonorkID: 100.611 Jason

Veni, vidi, VC
- I came, I saw, Visual C

Re: OnInitDialog in VC7

Tom Archer21-Mar-02 2:18

Tom Archer

21-Mar-02 2:18

Great page, Jason. Thanks!

Cheers,
Tom Archer
Author, Inside C#

Re: OnInitDialog in VC7

mits21-Mar-02 2:36

mits

21-Mar-02 2:36

Yeah, you're right !!!
they just moved it to a diffrent UI.
I'm sorry !

Dead | X|

ISAPI Debugging

Tili19-Mar-02 23:52

Tili

19-Mar-02 23:52

I have been trying to debug my ISAPI extensions on Windows XP pro. But i cant get it work. When I try to use a method from a book it gives me error you dont have required previliges on Internet Explorer but if i use extension without debugging it works fine. Also I cannot get the attach to process method t odebug. Can someone help me out what is wrong. Attach to process just closes my project and opens inetinfo.opt. Can someone guide me step by step.

In my dream, I was dorwning my §orrow§
But my §orrow§, they learned to §wim

My own ListCtrl into CListView

19-Mar-02 23:17

How do you make to use a CListCtrlEx (my CListCtrl) with GetListCtrl into CListView?

Re: My own ListCtrl into CListView

Joaquín M López Muñoz19-Mar-02 23:41

Joaquín M López Muñoz

19-Mar-02 23:41

Something along m_yourListCtrlEx.SubclassWindow(GetListCtrl.Detach()) might work. Not 100% sure, though.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Need to remove buttons from a propertysheet

Hans Ruck19-Mar-02 23:20

Hans Ruck

19-Mar-02 23:20

i need to remove some buttons and to change some others from the predefined of a propertysheet mfc dialog.
it's possible by hooking somehow, but i think that it should exist an easyer way to accomplish this.

need some advice.

rechi

Re: Need to remove buttons from a propertysheet

Joaquín M López Muñoz19-Mar-02 23:30

Joaquín M López Muñoz

19-Mar-02 23:30

In CYourPropertySheet::OnInitDialog, GetDlgItem(IDOK) will give you a CWnd * you can use to manipulate the "Accept" button in any manner you please (similarly for IDCANCEL).

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Need to remove buttons from a propertysheet

Hans Ruck19-Mar-02 23:55

Hans Ruck

19-Mar-02 23:55

this is true, but i would like to change the dialog by simply setting some flags; for example, you can remove the 'accept' button this way:
dlgPropertySheet.m_psh.dwFlags |= PSH_NOAPPLYNOW
otherwise, the remaining buttons need to be rearranged and this sucks.

anyway, thanks!

rechi

gen. a HASH from MAC address

peterchen19-Mar-02 23:09

peterchen

19-Mar-02 23:09

Hi!
I need to create a 22-bit-Hash of some PC-specific ID. I though of UuidCreateSequential, and hash the MAC part of the generated ID.

Now I absolutely don't know what makes a good hash function. It doesn't need to be very fast, and not overly sensitive. Any suggestions or links?

-------------

From Hash functions I've seen, I've come up with the following:

take the last six bytes of the ID, and

long hash = 0;
for(i=10..15) {
  hash <<= 2;
  hash |= id_byte[i];
}

(which creates only 20 bits, but that's ok...)

TIA
Peter

Help with probably basic ASSERT

Jason Hooper19-Mar-02 22:59

Jason Hooper

19-Mar-02 22:59

I'm trying to fetch the user of this program's handle from a file when my SDI application loads. I have the following at the end of my CPuppyView::OnInitialUpdate():

if (!pDoc->LoadHandle())
{
	CHandleDlg dlgHandle;

	if (dlgHandle.DoModal() == IDOK)
	{
		CString h;

		dlgHandle.m_cHandle.GetWindowText(h.GetBuffer(65), 65);

		h.ReleaseBuffer();

		strncpy(pDoc->handle, h, 63);
	}
	else 
		return;

	pDoc->SaveHandle();
}

GetDlgItem(IDC_HANDLE)->SetWindowText(pDoc->handle);

Something about this code is ASSERTing, and it's rdiving me nuts. I'm pretty sure it's something to do with the CEdit control I'm using for CHandleDlg::m_cHandle (I know, I know, it sounds a bit like m_cHammer, but I'm pretty sure it's not that). I'm using the VC7 MDE which very sadistically doesn't have the ClassWizard I'm used to. So maybe I've added the CEdit control wrong? Or maybe I'm just missing something in that code that is very obviously wrong.

- Jason
Do you have a Pulse?
SonorkID: 100.611 Jason

Re: Help with probably basic ASSERT

Joaquín M López Muñoz19-Mar-02 23:11

Joaquín M López Muñoz

19-Mar-02 23:11

The problem is that the underlying window encapsulated by dlgHandle (and all its controls) are destroyed by the time DoModal returns. To fix this, I'd suggest adding associating your edit box with CString variable (rather than a CEdit), that will be accessible after DoModal.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Help with probably basic ASSERT

Jason Hooper19-Mar-02 23:32

Jason Hooper

19-Mar-02 23:32

Ah, yes! That was precisely the problem. Thanks for the help.

- Jason
Do you have a Pulse?
SonorkID: 100.611 Jason

Remove Menu

vin19-Mar-02 22:21

vin

19-Mar-02 22:21

I want to remove the menu attached to my mdi application. Also i want my mainfram as well as childframe maximised along with this. How to get this?

Pls help

vini

judge two RGB values are same color, one is just darker ??

19-Mar-02 20:31

Hi,

I have two RGB values of same color, one is lighter and the other is darker. E.g., (107,113,181) and (74,85,132)

How could I judge they are same color by an algorithm?

Thanks.

Shawn Liu

Re: judge two RGB values are same color, one is just darker ??

Joaquín M López Muñoz19-Mar-02 21:17

Joaquín M López Muñoz

19-Mar-02 21:17

What is to be considered "the same color" is a fuzzy question, but you might find some approaches good for your needs. RGB triplets can be mapped to a different colorspace called HSV (Hue, Saturation and Value). From a physiological point of view, hue seems to capture well what humans perceive as "color", while saturation and value account for "brightness" and "luminosity", so to say.
H ranges between 0 and 360 degrees, and it is to be seen as "circular", i.e. 0=360.
So, you can calculate the H component for two RGB triplets and apply some distance criterion to determine whether they are the same color or not. Follow this link for a RGB to HSV routine in C. Hue values for the RGB triplets in your post are 235 and 229, respectively.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: judge two RGB values are same color, one is just darker ??

David Wengier19-Mar-02 21:36

David Wengier

19-Mar-02 21:36

Purely conjecture, but wouldnt the easiest way be simply subtract each value from the triplet from its corresponding value from the other triplet.

For example:
RGB(107,113,181)
and
RGB(87,93,161)
and the differences are
(20,20,20)

are the same colour, but the top one is lighter. You could have a margin of error, whereby the differences must be within 10 of each other for example.

--
David Wengier

TAC ad gone wrong: "Don't fool yourself, you're a bloody idiot."
Sonork ID: 100.14177 - Ch00k

Re: judge two RGB values are same color, one is just darker ??

Joaquín M López Muñoz19-Mar-02 21:46

Joaquín M López Muñoz

19-Mar-02 21:46

Well, no conclusive answer can be drawn about a psychovisual subject, but this measure of similarity seems very inaccurate to me, as it fails to identify RGB(128,0,0) and RGB(255,0,0) as the same color (both are pure red): differences are 128, 0 and 0, which are not within 10 of each other.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: judge two RGB values are same color, one is just darker ??

David Wengier19-Mar-02 21:55

David Wengier

19-Mar-02 21:55

I didnt think of that Smile | :)

--
David Wengier

TAC ad gone wrong: "Don't fool yourself, you're a bloody idiot."
Sonork ID: 100.14177 - Ch00k

Re: judge two RGB values are same color, one is just darker ??

Jon Hulatt20-Mar-02 5:12

Jon Hulatt

20-Mar-02 5:12

In RGB color, where 0 represents that channel OFF, and 255 represents that channel ON:

The relative intensity of each channel represents the overall color.

Therefore, (0,0,0) and (255,255,255) are the same color, one being quite a dark shade and one being a bright shade.

Therefore, treat the RGB triple as a 3-way ratio or fraction (R:G:B). if the ratio is the same, then they are the same color.

Jon

Sorry to dissapoint you all with my lack of a witty or poignant signature.

Saving Variable as a file?

MarkPQ19-Mar-02 19:27

MarkPQ

19-Mar-02 19:27

Hi all,

I have a CByteArray that is holding a bunch of 8 bit values. I'm getting the Hexadecimal values into the array from a device on the com port.

What i want to do is save these values as they are into a file. The hex values I have received are actually ascii characters (eg. 0x41 == 65 decimal == 'A') so I want to be able to save it as a file so when opened with notepad or something the ascii characters are there?

I was thinking that the serialize functions might be needed but I'm not entirely sure as it looks like it writes the file to an archive. What would be the best method to approach this??

Thanks
-Mark

Re: Saving Variable as a file?

Derek Waters19-Mar-02 19:58

Derek Waters

19-Mar-02 19:58

The CByteArray class has a GetData function which should do the trick:

CFile vfFile;
CByteArray varrStuff;
DWORD vdwLen;

// Fill up the byte array
vdwLen = varrStuff.GetSize();
vfFile.Open(_T("dump_me.txt"), CFile::modeCreate | CFile::modeWrite | CFile::shareDenyWrite);
vfFile.Write(varrStuff.GetData(), vdwLen);
vfFile.Close();

Hope this helps.

------------------------
Derek Waters
derek@lj-oz.com

Excel Automation

phat19-Mar-02 19:25

phat

19-Mar-02 19:25

Hi, Gurus

I am currently working on Excel Automation Project. I was just wondering if there is any
way to handle Microsoft Excel's menu bar in my
own dialog-based project. For example, if I press
the FILE button on my own project, I want the same event as File menu button has been presssed.
Any ideas?

Re: Excel Automation

Bill Wilson20-Mar-02 7:31

Bill Wilson

20-Mar-02 7:31

Use the excel application inteface methods to perform the same actions as those on the menu.

e.g.
Implement Save on the File menu with

OnFileSave()
{
pWorkbook->Save();
}

where pWorkbook is a pointer to the workbook interface.

Re: Excel Automation

phat20-Mar-02 14:31

phat

20-Mar-02 14:31

Thanks for the reply... I appreciate it although I expected

slightly different answer. If you open the MICROSOFT EXCEL

program, you can see the menu bar (File,Edit, View, Insert and so

on..)I want to have those specific menu clicked on my application.

You were talking about submenus. Any idea?

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