Re: Data Class - C / C++ / MFC Discussion Boards

Re: Start Full or Min

David Crow30-Jun-04 2:39

David Crow

30-Jun-04 2:39

Did you overlook the m_pMainWnd->ShowWindow(SW_SHOWMINIMIZED) statement in the InitInstance() method?

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: Start Full or Min

Zenix21-Jul-04 4:55

Zenix2

1-Jul-04 4:55

Below is my initInstance Function. There is no :"m_pMainWnd->ShowWindow(SW_SHOWMINIMIZED)". Is there another place it could possibly be? Thank you for your patience!

Garry

BOOL CCustomerApp::InitInstance()
{
// InitCommonControls() is required on Windows XP if an application
// manifest specifies use of ComCtl32.dll version 6 or later to enable
// visual styles. Otherwise, any window creation will fail.
InitCommonControls();

CWinApp::InitInstance();

// Initialize OLE libraries
if (!AfxOleInit())
{
AfxMessageBox(IDP_OLE_INIT_FAILED);
return FALSE;
}
AfxEnableControlContainer();
// Standard initialization
// If you are not using these features and wish to reduce the size
// of your final executable, you should remove from the following
// the specific initialization routines you do not need
// Change the registry key under which our settings are stored
// TODO: You should modify this string to be something appropriate
// such as the name of your company or organization
SetRegistryKey(_T("Local AppWizard-Generated Applications"));
LoadStdProfileSettings(4); // Load standard INI file options (including MRU)
// Register the application's document templates. Document templates
// serve as the connection between documents, frame windows and views
CMultiDocTemplate* pDocTemplate;
pDocTemplate = new CMultiDocTemplate(IDR_CustomerTYPE,
RUNTIME_CLASS(CCustomerDoc),
RUNTIME_CLASS(CChildFrame), // custom MDI child frame
RUNTIME_CLASS(CCustomerView));
AddDocTemplate(pDocTemplate);
// create main MDI Frame window
CMainFrame* pMainFrame = new CMainFrame;
if (!pMainFrame->LoadFrame(IDR_MAINFRAME))
return FALSE;
m_pMainWnd = pMainFrame;
// call DragAcceptFiles only if there's a suffix
// In an MDI app, this should occur immediately after setting m_pMainWnd
// Enable drag/drop open
m_pMainWnd->DragAcceptFiles();
// Enable DDE Execute open
EnableShellOpen();
RegisterShellFileTypes(TRUE);
// Parse command line for standard shell commands, DDE, file open
CCommandLineInfo cmdInfo;
ParseCommandLine(cmdInfo);
// Dispatch commands specified on the command line. Will return FALSE if
// app was launched with /RegServer, /Register, /Unregserver or /Unregister.
if (!ProcessShellCommand(cmdInfo))
return FALSE;
// The main window has been initialized, so show and update it
pMainFrame->ShowWindow(m_nCmdShow);
pMainFrame->UpdateWindow();
return TRUE;
}

Re: Start Full or Min

David Crow1-Jul-04 5:09

David Crow

1-Jul-04 5:09

Was this created with Visual Studio 6? Have you looked at the project's frame-related classes to see if they are adjusting the window's size? Since it is an MDI application, have you looked at the CChildFrame::ActivateFrame() method?

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: Start Full or Min

Zenix21-Jul-04 5:23

Zenix2

1-Jul-04 5:23

Yes, I did check them. this program is being compiled in VS.Net. Is .Net different enough from 6.0 that there would be something else to consider?

Garry

Re: Start Full or Min

David Crow1-Jul-04 5:32

David Crow

1-Jul-04 5:32

Zenix2 wrote:
Is .Net different enough from 6.0 that there would be something else to consider?

Since I do not use .NET, I cannot say.

You might want to create three projects, A and B and C, with one being initially minimized, one being initially maximized, and one being the default settings. Then compare the files to see where the difference is.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: Start Full or Min

Zenix21-Jul-04 8:49

Zenix2

1-Jul-04 8:49

Good thought, thank you! It makes sense. I appreciate all your time.

Garry

Data Class

Anonymous29-Jun-04 6:19

Anonymous

29-Jun-04 6:19

Anyone can explain me what is the concept of data class. How it is different then the normal class.

Re: Data Class

David Crow29-Jun-04 6:57

David Crow

29-Jun-04 6:57

I've never heard the term "data class" before but it sounds like it might be a struct.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: Data Class

Maximilien29-Jun-04 7:45

Maximilien

29-Jun-04 7:45

in what context ?

Maximilien Lincourt
Your Head A Splode - Strong Bad

converting MFC mdi exe into MFC Dll

yashu50429-Jun-04 5:29

yashu504

29-Jun-04 5:29

Hi All

I like to put my MFC MDI application into a dll. There will not be any supporting exes. Needs to bring the UI through some function call from dll.

I appreciate if anybody can help me with this.

Re: converting MFC mdi exe into MFC Dll

palbano29-Jun-04 6:08

palbano

29-Jun-04 6:08

Have you ever written a DLL in C++?

"No matter where you go, there your are." - Buckaroo Banzai

-pete

Progress Bar

Dennis L29-Jun-04 4:59

Dennis L

29-Jun-04 4:59

Hi!

How can I create an owner draw progress bar in Win32 SDK(no MFC)?

Re: Progress Bar

Rick York29-Jun-04 6:13

Rick York

29-Jun-04 6:13

Check the articles on this site. I believe there are one or two on this topic.

__________________________________________
a two cent stamp short of going postal.

Re: Progress Bar

palbano29-Jun-04 6:19

palbano

29-Jun-04 6:19

Well maybe i'm crazy but when i want ot use the Windows SDK i find the Windows SDK DOCUMENTATION helpful
Progress Control

"No matter where you go, there your are." - Buckaroo Banzai

-pete

Load picture data

RonnyS29-Jun-04 4:36

RonnyS

29-Jun-04 4:36

Hello!

I wanna load the picture data from a tif or bmp pciture.
I have tried it with ifstream but when i read the file und "cout" the characters there are only smileys ...???

I have a picture, and i have to read the "Text" hwo crates the picture, because i have to put pics together and it shuold work when i crate a new header an insert the picture data in the right position...

That means i need a function who writes all the picture data out in a File or an char or int array or what ever....

Important is only that i can read and work with these datas in my application.

I hope you have understand what i mean and you can help me!

Thanks!
Greetings Ronny

Re: Load picture data

Johan Rosengren29-Jun-04 20:32

Johan Rosengren

29-Jun-04 20:32

You might want to go here: http://www.codeproject.com/bitmap/#Bitmaps[^], where there are several articles that seems to be of interest to you, and of course here: www.wotsit.org[^], the definite guide on file formats.

And, finally, here http://www.codeproject.com/file/ [^]you have several articles with nifty file classes, if that should prove a stumbling block.

CreateProcessWithLogonW

A T I F29-Jun-04 4:11

A T I F

29-Jun-04 4:11

I am calling CreateProcessWithLogonW to spawn a new process in WinXP and it takes about 45 seconds on my computer to load the new process....any idea why this is happening....??

It takes about 2 to 3 seconds for the same call to spawn a new process on Win 2000 machine.

Re: CreateProcessWithLogonW

valikac29-Jun-04 6:31

valikac

29-Jun-04 6:31

ARe you spwaning the same process (exe) on both OS?

Kuphryn

Re: CreateProcessWithLogonW

A T I F29-Jun-04 21:53

A T I F

29-Jun-04 21:53

Yes...it seems that the exe is not taking the time...it is the CreateProcessWithLogonW call that is taking the time....

Re: CreateProcessWithLogonW

darkbyte30-Jun-04 14:26

darkbyte

30-Jun-04 14:26

How different are the login profiles of both accounts ? (i.e., the one on winXP and the one on win2K)

If one has more processes under HKCU->...->Run, then its normal that is requires more time.

Just a thought

DarkByte

Re: CreateProcessWithLogonW

A T I F30-Jun-04 21:08

A T I F

30-Jun-04 21:08

It is a good thought indeed but for my case the user on both XP and 2000 are newly created standard users. They have been created from the User Management console in both OS.

How to delete *ptr correctly?

uus9929-Jun-04 4:03

uus99

29-Jun-04 4:03

I made a very simple class, and when the default destructor is called, i get a debug assertion failure. (i'm using VC++ SP5)

if i call a function like this

void Testfunction()
{
uImage test;
test.Create(100);
}

the function exits properly, with the default destructor deleting the arrays successfully, however,if i call a function like this, that is without allocating the arrays,

void Testfunction()
{
uImage test;
}

The function exits with a Debug Assertion Failure, _CrtIsValidHeapPointer

What i'm confused is that, i'm trying to do cleanup in the destructor by deleting all the dynamic arrays. Although i havent created the arrays, there should be no problem coz i checked whether the pointers are NULL or not (when performing delete). So, why is there a debug assertion?

My class header is

#ifndef UIMAGE_H
#define UIMAGE_H

class uImage
{
private:
int *R;
int *G;
int *B;

public:
uImage();
~uImage();
void Create(int x);
};

#endif

My Class is

#include "StdAfx.h"
#include "uImage.h"

uImage::uImage()
{

}

uImage::~uImage()
{
if(R!=NULL) delete R;
if(G!=NULL) delete G;
if(B!=NULL) delete B;
}

void uImage::Create(int x)
{
R=new int[x];
G=new int[x];
B=new int[x];
}

Re: How to delete *ptr correctly?

David Crow29-Jun-04 4:24

David Crow

29-Jun-04 4:24

uus99 wrote:
if(R!=NULL) delete R;
if(G!=NULL) delete G;
if(B!=NULL) delete B;

Should be:

if(R!=NULL) delete [] R;
if(G!=NULL) delete [] G;
if(B!=NULL) delete [] B;

The differences between delete and delete [] were discussed here about a week ago. Search this forum for that thread.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: How to delete *ptr correctly?

uus9929-Jun-04 4:26

uus99

29-Jun-04 4:26

Yes, you are right, i realized it. Even after i corrected that, there is still the same problem. Why?

Re: How to delete *ptr correctly?

Antony M Kancidrowski29-Jun-04 4:33

Antony M Kancidrowski

29-Jun-04 4:33

You have not initialised the pointers.

uImage::uImage() : R(NULL), G(NULL), B(NULL)
{

}

uImage::uImage()
{
R = NULL;
G = NULL;
B = NULL;
}

Given this you do not need to check for R != NULL etc before calling delete as delete does the check for you.

Secondly you have missed deleting the array properly.

delete [] R;
R = NULL;

etc...

I would set R = NULL; after the delete also. But that's just me!;)

Ant.

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

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