Re: Design suggestion - C / C++ / MFC Discussion Boards

__makaveli__2-Mar-05 9:19

2-Mar-05 9:19

Basically I am trying to create a plugin to add functionality to another language, I want to add the ability to create a parent window and subsequent child windows of the same size, I would then lay out the child windows as different views to be drawn on the parent window at runtime, the user would never see the child windows, just the different "views" in the parent window. Does that make sense?

I have access to the various properties of the window such as the window handle so I can modify any necessary properties of the windows in C++.

Re: Window within a window

David Crow2-Mar-05 9:28

David Crow

2-Mar-05 9:28

Have you seen the CreateWindow() function. If, for example, you wanted to create an edit control, you'd have something like:

CreateWindow("Edit", ..., hWndParent, ...);

I think the second parameter is WS_POPUP | WS_VISIBLE but can't be for sure without trying it out.

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Re: Window within a window

__makaveli__2-Mar-05 9:30

__makaveli__

2-Mar-05 9:30

Yeah, I have tried that but the window already exists and contains controls, I just need it to become part of a parent window.

Re: Window within a window

David Crow2-Mar-05 9:34

David Crow

2-Mar-05 9:34

__makaveli__ wrote:
I just need it to become part of a parent window.

Would SetParent() help?

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

Re: Window within a window

__makaveli__2-Mar-05 9:40

__makaveli__

2-Mar-05 9:40

It may well do! Don't know how I missed that, I would have to set the child to "overlapped" to make it draw within right?

Re: Window within a window

__makaveli__3-Mar-05 10:39

__makaveli__

3-Mar-05 10:39

Thanks for the suggestions! After some messing about, it worked like a charm!

Design suggestion

doctorpi2-Mar-05 6:12

doctorpi

2-Mar-05 6:12

Hi guys.
I don't know if this is the best place for this post.
If not, please redirect me.
I need a design suggestion.
I have to solve a problem consistent in:
8 balls and 8 boxes. Boxes and balls have diferent sizes.
I have to know if I can put each ball inside one of the boxes.
Evidently the balls must fit inside the boxes.
The problem has solution only when each ball fit inside a box.
I solved this problem using backtracking and works fine.
My question is: there is a fast way to do this than with backtracking?
I need the fastest solution.
Thanks in forwarding.
Doc

Re: Design suggestion

BlackDice2-Mar-05 7:17

BlackDice

2-Mar-05 7:17

make a ball class, make a box class. define an overloaded operator for comparing sizes, probably based on the box's height and the ball's diameter. sort both arrays (or vectors). they should be matched up at that point.

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Re: Design suggestion

Antony M Kancidrowski2-Mar-05 11:32

Antony M Kancidrowski

2-Mar-05 11:32

BlackDice wrote:
sort both arrays (or vectors)

Ensure you sort them in the same way, say smallest first. Sorry, could not resist! Wink | ;)

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)

Please help me.

dSolariuM2-Mar-05 5:43

dSolariuM

2-Mar-05 5:43

Hi ,
1:I want to create a full duplex network program.
2:what is the best way to create a network program ? more powerful
than CSocket?
Best Wishes,
Thanks.

Re: Please help me.

Ravi Bhavnani2-Mar-05 6:49

Ravi Bhavnani

2-Mar-05 6:49

I recommend reading this[^] article. It's well written, and includes an easy-to-use communication framework and a full-duplex chat client-server app.

/ravi

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CPropertySheet

g3e2-Mar-05 5:24

g3e

2-Mar-05 5:24

I have a wizard derived from propertysheet. It is a modal dialog which is invoked using DoModal(). Immediately after the wizard is displayed, I want to popup a dialog. But i'm not able to track the exact point after the wizard is shown. In which method of the wizard can i do this ???

Thanx for ur help.

Re: CPropertySheet

bcemick2-Mar-05 6:29

bcemick

2-Mar-05 6:29

Try doing in the OnInitDialog of your wizard.

Re: CPropertySheet

David Crow2-Mar-05 9:33

David Crow

2-Mar-05 9:33

At the end of the sheet's OnInitDialog() method, you'll need to post a user-defined message. In the handler of that message, instantiate the other dialog and call its DoModal() method. You cannot do the latter directly from the sheet's OnInitDialog() method.

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

Re: CPropertySheet

Antony M Kancidrowski2-Mar-05 11:12

Antony M Kancidrowski

2-Mar-05 11:12

If you use a modeless dialog box you can create it and show it within the OnInitDialog method of the wizard.

Basic idea

1) Create dialog
2) Call ShowWindow for the wizard (Ensures that the wizard is shown)
3) Call ShowWindow for the dialog (Shows the modeless dialog)

before returning from the OnInitDialog of the wizard.

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: CPropertySheet

g3e3-Mar-05 3:07

g3e

3-Mar-05 3:07

Thanx for all ur responses. Its working now !!!
I tried first to post a user defined message from the sheet's InitDialog. But that did not work as expected. Then i tried the same from the InitDialog of the property page. And it worked just as required.

Thanx again.

Change Print Orientation

DanYELL2-Mar-05 5:16

DanYELL

2-Mar-05 5:16

I have a 4-page document to print out. The first 3-pages are
printed in landscape. This I can do.

The last page needs to be printed in portrait. After the first
3-pages are printed, how can I change the orientation to portrait
without prompting the user to print again and this time select
portrait.

I use this code to switch to landscape:

BOOL CFormOptions::SetLandscape(CPrintInfo* pInfo)
{
tagPDA pPrintDlg;
AfxGetApp()->GetPrinterDeviceDefaults (&pPrintDlg);
pInfo->m_pPD->m_pd.hDevMode = pPrintDlg.hDevMode;
LPDEVMODE devMode = pInfo->m_pPD->GetDevMode();
if (devMode)
{
// devMode->dmPaperSize = DMPAPER_LEGAL;
devMode->dmPaperSize = DMPAPER_LETTER;

devMode->dmOrientation = DMORIENT_LANDSCAPE;

GlobalUnlock(devMode);
}

return DoPreparePrinting(pInfo);
}

and I call a similar function with DMORIENT_PORTRAIT just before
I print the 4th page, but it still prints in LANDSCAPE. Any idea
on how to change the orientation during the print process for just
that last page?

Please, any response any one can give me will be greatly
appreciated.

Sincerely,
Danielle Brina (an overworked graduate student)

Re: Change Print Orientation

PJ Arends2-Mar-05 6:19

PJ Arends

2-Mar-05 6:19

From where are you calling this function? Based on the fact that you are returning DoPreparePrinting() I will say you are calling it from OnPreparePrinting(). According to this MSDN page[^] you should be setting the page orientation in OnPrepareDC.

In OnPrepareDC you would update your DEVMODE structure as you have done, then call CDC::ResetDC with the updated DEVMODE to change the orientation.

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Re: Change Print Orientation

basementman2-Mar-05 6:24

basementman

2-Mar-05 6:24

The secret is that you need to call pDC->ResetDC(&sNewDevModeStruct) after you call pDC->EndPage() for page 3 and prior to calling pDC->StartPage() for page 4.

ResetDC is the magic behind print jobs that have pages that are 1) different orientations 2) sourced from different paper bins 3) different paper sizes.

See MSDN for more info.

onwards and upwards...

256 color bitmaps in resource

includeh102-Mar-05 5:16

includeh10

2-Mar-05 5:16

is it possible to have a 256 color bitmaps in c++ resource?

includeh10

Re: 256 color bitmaps in resource

C^hris L^osinger2-Mar-05 7:30

C^hris L^osinger

2-Mar-05 7:30

yes.

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Re: 256 color bitmaps in resource

Antony M Kancidrowski2-Mar-05 11:34

Antony M Kancidrowski

2-Mar-05 11:34

Use the import functionality to add them into the resource.

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: 256 color bitmaps in resource

ThatsAlok2-Mar-05 17:13

ThatsAlok

2-Mar-05 17:13

includeh10 wrote:
is it possible to have a 256 color bitmaps in c++ resource?

What type of error are you getting while adding the 256 color Bitmap!!!

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Close button problem

spdl20012-Mar-05 5:01

spdl2001

2-Mar-05 5:01

I am using visual C++ .net
I want to try out a simple program by adding a close button on a dialog

what should I type on the

void TryDlg::OnBnClickedButton1()
{
}

Thanks

Re: Close button problem

Cedric Moonen2-Mar-05 5:22

Cedric Moonen

2-Mar-05 5:22

Take a look at EndDialog.
Or calling OnOk() or OnCancel() works also but DoModal will return IDOK or IDCANCEL then.

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