VERY urgent(VC++) !!!!!!!! - C / C++ / MFC Discussion Boards

Re: Minimizing Dialog

benjymous28-Jun-02 0:34

benjymous

28-Jun-02 0:34

Here's how to give a sub-dialog it's own icon

in the constructor of your sub dialog class

m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);

and in the dialog's ::OnInitDialog

// Set the icon for this dialog.  The framework does this automatically
//  when the application's main window is not a dialog
SetIcon(m_hIcon, TRUE);       // Set big icon
SetIcon(m_hIcon, FALSE);      // Set small icon

Override the dialog's ::OnPaint

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CMyDialog::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

And finally, as a protected member of the dialog class:

HICON     m_hIcon;

All of this will have been done automatically for your main dialog by the MFC AppWizard

--
Help me! I'm turning into a grapefruit!

Re: Minimizing Dialog

Fredrik Skog28-Jun-02 0:38

Fredrik Skog

28-Jun-02 0:38

I think you should consider the design of the program. You seem to go about the business backwards.
My suggestion is to open a modal dialog (the log-on dialog) from the OnInitDialog function of your main app. Your main app will then be displayed after returning from the log-on dialog.

Cheers,
Fredrik

<right>Sonork ID: 100.11430:PhatBoy

'It is so much simpler to bury reality than it is to dispose of dreams.'

- Don Delillo, Americana

Re: Minimizing Dialog

28-Jun-02 3:41

hi Got ur problem...u hav 2 dialogs..and in a dialog based app u make ur default dialog login dialog and u create another dialog class to process after the login...the MFC gives all th esupporting code in to the first dialog ..and u want the same for second dialog..so u ask for some code for the minimisation and icon in Taskbar...there is no need of that..u just make the first dialog(MFC give al supporting code)as the dialog after login and u just create a second dialog class and use that in ur OnInitDialog() of the first..problem solved..!!!

"Eliye pedichu illam chudano"???

Renjith-The CPian.

Ms Word Automation PageWidth HiMetric

Braulio Dez27-Jun-02 21:22

Braulio Dez

27-Jun-02 21:22

Hi,

MS Word Automation, If I call the method PageSize, I get the output in inches, how can I get it in Milimeters or Himetric ?

Thanks in advance, greetings
Braulio

PS.: I HATE INCHES !!!! :-P

Re: Ms Word Automation PageWidth HiMetric

Mike Nordell28-Jun-02 9:08

Mike Nordell

28-Jun-02 9:08

returnvalue * 25.4 ?

Re: Ms Word Automation PageWidth HiMetric

Braulio Dez30-Jun-02 21:56

Braulio Dez

30-Jun-02 21:56

It seems that not, I don´t know why but it seems that Ms Word makes something strange there Frown | :-(

Thanks
Braulio

crypted CFile, used with CArchive

eXplodus27-Jun-02 20:51

eXplodus

27-Jun-02 20:51

somewhere on the web, i thought it was here on codeproject but i dont know it really anymore
i found an article frome someone who used a CFile and make it own crypted version of it and make it usable with CArchive. Did someone know this article. I dont find it anymore.

Cry | :((

VERY urgent(VC++) !!!!!!!!

shanker27-Jun-02 20:48

shanker

27-Jun-02 20:48

i am creating activex combobox using visual c++. i am facing one prob... i would like to know how to resize the combobox corresponding to its fontsize. whenever the fontsize or fontchanges the control has to resize not only the edit portion also the dropdown portion.
thanks in advance.

Shanker

Source of spreadsheet program

ivex27-Jun-02 20:06

ivex

27-Jun-02 20:06

I want to code a spreadsheet program in DOS mode, can anyone suggest some source code? Thanks!

Set Title in MDIChildFrame

27-Jun-02 20:04

I created an MDI application. I dynamically create the document, and the child frame in an MDI applicaiton. However, the title bar in the MDI child frame is empty. I tried use pFram->SetWindowText(myTitle), but it doesn't work. How can I set the title for an MDI child frame programatically ?

Re: Set Title in MDIChildFrame

Bill S27-Jun-02 20:18

Bill S

27-Jun-02 20:18

Try this:

CDocument::SetTitle(LPCTSTR lpszTitle)

Re: Set Title in MDIChildFrame

louise27-Jun-02 21:21

louise

27-Jun-02 21:21

BOOL CChildFrame::PreCreateWindow(CREATESTRUCT& cs)
{
// TODO: Modify the Window class or styles here by modifying
// the CREATESTRUCT cs

cs.style &= ~(LONG) FWS_ADDTOTITLE; // add your source code!!!
// and u use SetWindowText!!!

if( !CMDIChildWnd::PreCreateWindow(cs) )
return FALSE;

return TRUE;
}

Why is this not 512 bytes!

clintsinger27-Jun-02 18:09

clintsinger

27-Jun-02 18:09

I have some code to read the partition table. The structure is supposed to be 512 bytes to read from the disk and I have translated from the Pascal code the following structure to c++:

(The pascal code works fine as it is 512 bytes)

TPartEntry = record
	boot_ind    : Byte;		// 0x80 - active
	head        : Byte;		// starting head
	sector      : Byte;		// starting sector
	cyl         : Byte;		// starting cylinder
	sys_ind     : Byte;		// What partition type
	end_head    : Byte;		// end head
	end_sector  : Byte;	   // end sector
	end_cyl     : Byte;		// end cylinder
	start_sect  : UINT;	   // starting sector counting from 0
	nr_sects    : UINT;  	// nr of sectors in partition
  end;

  TDiskTable = record
   Data  : array[1..446] of Char;
   Table : array[1..4] of TPartEntry;
   Signature : WORD;
  end;

... to get this...

typedef struct tagPARTENTRY
{
	BYTE		bBoot;	 	// 0x80
	BYTE		bHead;	 	// starting head
	BYTE		bSector; 	// starting sector
	BYTE		bCyl;	 	// starting cylinder
	BYTE		bSysInd; 	// What partition type
	BYTE		bEndHead; 	// end head
	BYTE		bEndSector;     // end sector
	BYTE		bEndCyl; 	// end cylinder
	UINT		unStartSect;    // start sector starting from 0
	UINT		unNumSects;     // number of sectors in partition
} PARTENTRY;

typedef struct tagDISKTABLE
{
	CHAR		cData[446];
	PARTENTRY 	tTable[4];
	WORD		wSignature;
} DISKTABLE;

When I do a sizeof(DISKTABLE) it returns a size of 516 bytes. When I manually add up the values I get 512 bytes. Where are the other 4 bytes coming from and what am I doing wrong? WTF | :WTF:

Cheers,
Clint

Re: Why is this not 512 bytes!

Joaquín M López Muñoz27-Jun-02 20:03

Joaquín M López Muñoz

27-Jun-02 20:03

Alignment issues, I guess. Try enclosing the definition of the structure between alignment #pragmas like this:

#pragma pack(push,PREVIOUS_PACK_VALUE,1)
... // your definition here
#pragma pack(pop,PREVIOUS_PACK_VALUE)

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Why is this not 512 bytes!

clintsinger28-Jun-02 6:46

clintsinger

28-Jun-02 6:46

I have never used the #pragma pack and documentation is a little obscure as to how to use it. I was wondering if you could give me an example based on my sampel code which I provided in my previous post.

Thanks in advance!

Clint

Got it!

clintsinger28-Jun-02 7:28

clintsinger

28-Jun-02 7:28

Thanks for you help. I figured out how to use the #pragma pack and it did the trick. You can just ignore the last reply. Thanks again.

Cheers,
Clint

how to handle HANDLE from CreateEvent() after used it?

zecodela27-Jun-02 18:07

zecodela

27-Jun-02 18:07

hi,
is it neccessary to clear or delete the handle from CreateEvent()?
if i just create a new HANDLE and hold with variable holding previous HANDLE from CreateEvent(), will there anything wrong after long run?
thanks,
jim

Re: how to handle HANDLE from CreateEvent() after used it?

Prem Kumar27-Jun-02 19:43

Prem Kumar

27-Jun-02 19:43

you need to close any handles you dont need
explicitly by using CloseHandle or by using any
function with respect to the particular operation
you are doing which properly releases the resources.

Re: how to handle HANDLE from CreateEvent() after used it?

zecodela28-Jun-02 16:17

zecodela

28-Jun-02 16:17

hi,
do you any method that i can check whether my event object still be in the kernel if i don't execute CloseHandle()?
in my case, i run CreateObject again and again, and put the return handle to cover the previous handle. so, i don't know the previous event object has been destroyed in kernel or not.
do you know any tools to check about this?

How to return a COM Obj from ATL

27-Jun-02 16:55

Hello!

I have a simple requirement, I need to make an ActiveX EXE Server using ATL COM and call it from VB. I have to create a simple ATL Object and add a method to it which returns another simple ATL COM Object (which I have also created in the same project) to the caller. Although I can write simple methods using the wizard, I am unable to pass the second object.

I am quite new to VC++ and any help would be greatly appreciated.

Thank you.

Re: How to return a COM Obj from ATL

Prem Kumar27-Jun-02 19:44

Prem Kumar

27-Jun-02 19:44

SA wrote:
return a COM Obj from ATL

Ok, first of all you cannot return any objects.
What you can do is return an interface pointer
preferably IDispatch and the vb client will
interact thru it.

Re: How to return a COM Obj from ATL

A.A.28-Jun-02 17:13

A.A.

28-Jun-02 17:13

If I understand what you are trying to say, why don't you just create the second object like you did the first, and just retrieve the IUknown pointer... That is to say treat it as you would treat other one as the first one.

Re: How to return a COM Obj from ATL

29-Jun-02 7:45

Well, as I had pointed out, I am new to this env. and need a little more elaborate answer.

I created an ATL COM Project.
I added a Simple COM Object.
I added a second simple COM Object.

Now I want to add a method to the first one which takes a few String Parameters and returns (an interface pointer to??) the second object.

Can I get some example for the IDL and the function itself, which creates and returns the second COM Object ?

Thanks in advance.

Re: How to return a COM Obj from ATL

A.A.29-Jun-02 14:02

A.A.

29-Jun-02 14:02

What I was recommending is just create the new Object the same way you created the first one but apparantly by reading your new message I understand what you want to do is something a little different.

First of all you can't just return new Object and just cast that to IMyInterface*(If you want the reasons let me know). So what you need to create the first object with Aggretable support. Then create the second simple object using createInstance in the first Object(you will be passing the IUnkonwn* of the first object). Add the COM_INTERFACE_ENTRY_AGGREGATE() macro in the COM map. Dont forget to decrement the reference count when you dont need the second object(remember its still considered a COM object). No need to mess with IDL.

Note: There is a Macro similar to the above that takes care of creation and destruction.

If something is still unclear or need help with a specific part of the code let me know.

writing a dll

Steve L.27-Jun-02 14:24

Steve L.

27-Jun-02 14:24

I need to write a DLL and my books don't have a good explanation of how to do so. Any tutorials on the basics?

-Raffi

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