C / C++ / MFC Discussion Boards

First Prev Next

Re: how to update edit controls? [modified]

thathvamsi28-Jun-06 17:19

thathvamsi

28-Jun-06 17:19

hey I have created CEdit member variable for my control. But I dont find OnInitDialog() method in my dialog.cpp file. Isnt OnInitDialog() automatically generated by classwizard?
how do i include OnInitDialog()?

-- modified at 23:22 Wednesday 28th June, 2006
I create the dialog using DoModal()

Re: how to update edit controls?

David Crow29-Jun-06 2:40

David Crow

29-Jun-06 2:40

thathvamsi wrote:
Isnt OnInitDialog() automatically generated by classwizard?

Yes. I've never seen it not be generated.

thathvamsi wrote:
how do i include OnInitDialog()?

Via ClassWizard.

"The largest fire starts but with the smallest spark." - David Crow

"Judge not by the eye but by the heart." - Native American Proverb

how we get the IDs of the menu items

happy_ram27-Jun-06 21:16

happy_ram

27-Jun-06 21:16

how we get the IDs of the menu items
ram.

Re: how we get the IDs of the menu items

Hamid_RT27-Jun-06 21:24

Hamid_RT

27-Jun-06 21:24

<br />
CMenu m;<br />
m.GetMenuItemID(pos);

whitesky

Making CTabCtrl flicker free?

Moak27-Jun-06 21:14

Moak

27-Jun-06 21:14

Hi
I have a CTabCtrl in a resizeable dialog and it flickers a lot if I resize the dialog. Any ideas, e.g. make it an owner draw control?

/M

Re: Making CTabCtrl flicker free?

Hamid_RT27-Jun-06 21:29

Hamid_RT

27-Jun-06 21:29

See Here[^] maybe it is some helpful to you

whitesky

Re: Making CTabCtrl flicker free?

Moak4-May-07 11:52

Moak

4-May-07 11:52

thanks. Indeed I am going owner-draw now.

Re: Making CTabCtrl flicker free?

Hamid_RT5-May-07 4:57

Hamid_RT

5-May-07 4:57

Very good. Big Grin | :-D

WhiteSky

Re: Making CTabCtrl flicker free?

Sarath C27-Jun-06 21:39

Sarath C

27-Jun-06 21:39

Use Double Buffering technique [^] for drawing the control

SaRath.

"It is your attitude, not your aptitude, that determines your altitude - Zig Ziglar."
My Blog | Understanding State Pattern in C++

Pointer to class member function

Mila02527-Jun-06 21:13

Mila025

27-Jun-06 21:13

Hi,

Maybe today isn't my best day Wink | ;)

but could anyone tell me what is wrong with this snippet ?

class CTest
{
public:
  CTest()
  {
    (*(this)).lpFunc = &CTest::Write;
  }
  long Write(DWORD dwInfo)
  {
    ...
  }
  long (*lpFunc)(DWORD);
}

I've got error C2440:

'=' : cannot convert from 'long (__thiscall CTest::* )(DWORD)' to 'long (__cdecl *)(DWORD)'

and when I change line: (*(this)).lpFunc = &CTest::Write;
to

(CTest::*lpFunc) = &CTest::Write;

I've got another error code:

error C2059: syntax error : '<tag>::*'

Generally I want to point on lpFunc a pointer to Write fuction but within class (I don't want to any globals).

-----------
Mila

-- modified at 3:15 Wednesday 28th June, 2006

Re: Pointer to class member function

toxcct27-Jun-06 21:20

toxcct

27-Jun-06 21:20

Mila025 wrote:
'=' : cannot convert from 'long (__thiscall CTest::* )(DWORD)' to 'long (__cdecl *)(DWORD)'

notice the calling convention of the two parts of your operator = reported by the compiler.

you function Write has to be either static or global. the fact is that being a class member function implicitely adds it the this pointer parameter...

TOXCCT >>> GEII power

[VisualCalc 3.0 updated ][Flags Beginner's Guide new! ]

Re: Pointer to class member function

talkshit11-Jul-06 2:07

talkshit1

1-Jul-06 2:07

static need be there ONLY if it is not a member of the class.

Re: Pointer to class member function

super_ttd1-Jul-06 9:59

super_ttd

1-Jul-06 9:59

certainly not !!!
compile the code and tell if the compiler complains... Suspicious | :suss:

-- TTD --

Re: Pointer to class member function

Don Box27-Jun-06 21:28

Don Box

27-Jun-06 21:28

That Write method MUST be static.
So solution is :-

class CTest

{

public:

CTest()

{

(*(this)).lpFunc = &CTest::Write;

}

static long Write(DWORD dwInfo)

{

...

}

long (*lpFunc)(DWORD);

}

Re: Pointer to class member function

Justin Tay27-Jun-06 21:31

Justin Tay

27-Jun-06 21:31

That's not how you declare a member function pointer.

class CTest
{
  public:
  CTest()
  {
    lpFunc = &CTest::Write;
  }
  long Write(DWORD dwInfo)
  {
    ...
  }
  long (CTest::*lpFunc)(DWORD); // declaration for member function pointer
};
<pre>

Size of structure in c++

Tony Kurishunkal27-Jun-06 20:33

Tony Kurishunkal

27-Jun-06 20:33

Dear friends pls check the following program
I tried it in VC++ compiler and the size of structure is depending on the order of variables
What is the reason behind it
any one pls answer me
Thanks

// struct.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include "iostream.h"

struct st1
{
char q ;
int p;

}a1;

struct st2
{
char q ;
char r;
int p;

}b1;

struct st3
{
char q ;
int p;
char c;

}c1;

int main(int argc, char* argv[])
{

cout << sizeof(a1);
cout<

Re: Size of structure in c++

bob1697227-Jun-06 20:43

bob16972

27-Jun-06 20:43

From MSDN...

"When applied to a structure type or variable, sizeof returns the actual size, which may include padding bytes inserted for alignment."

Re: Size of structure in c++

Tony Kurishunkal27-Jun-06 22:39

Tony Kurishunkal

27-Jun-06 22:39

Thanks bob
Thank you very much

Re: Size of structure in c++

FarPointer27-Jun-06 20:47

FarPointer

27-Jun-06 20:47

More info see this :-
http://www.codeguru.com/forum/showthread.php?t=276622[^]

Regards,
FarPointer
Blog:FARPOINTER

Re: Size of structure in c++

Tony Kurishunkal27-Jun-06 22:40

Tony Kurishunkal

27-Jun-06 22:40

Thank you very much

convert vc++ code to net

hafz27-Jun-06 20:25

hafz

27-Jun-06 20:25

I need to convert vc++ code to net with the available dll files.How should i do this?
my existing code is in vc++ and i want to make web based application in asp.net using this code..
can u plz help me out how to do this..

Re: convert vc++ code to net [modified]

_AnsHUMAN_ 27-Jun-06 20:29

_AnsHUMAN_

27-Jun-06 20:29

You are talking of calling the unmanged code into the managed code. you will find some articles on this ,here on codeproject.
What do you mean exactly by conversion?
You will have to rewrite the code on the .NET platform if you don't go with the above option
Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

-- modified at 2:30 Wednesday 28th June, 2006

Re: convert vc++ code to net

Rajesh R Subramanian28-Jun-06 1:21

Rajesh R Subramanian

28-Jun-06 1:21

~~rename .cpp files to .net~~

You will have to rewrite the whole thing in the language that you want.

Dead | X|

Re: how to convert vc++ code into vc.net

led mike27-Jun-06 20:23

led mike

27-Jun-06 20:23

hafz wrote:
how to do this

learn .NET and then do the conversion. Roll eyes | :rolleyes:

"Just about every question you've asked over the last 3-4 days has been "urgent". Perhaps a little planning would be helpful?"
Colin Angus Mackay in the C# forum

led mike

the MainFram & FormView in MDI

zeus_master27-Jun-06 20:06

zeus_master

27-Jun-06 20:06

Dear VC-master,

Thank you for your attention,

In my MDI project, the based view is CFormView. named CMyView.

the problem is,

in CMainFrame class, SetValue()was defined.

in CMyView class, public function SetEdit(true)was defined.

in myview.cpp, if I use below, it is ok.
void CMyView::OnSendValue()
{
CMainFrame *pMainfram = (CMainFrame *)AfxGetMainWnd();
pMainfram->SetValue(0x55);
}

but if In MainFrm.cpp

void CMainFrame ::OnSendValue()
{
CMyView *pMyView= (CMyView *)<b>GetActiveView();</b>
pMyView->SetEdit(true);
}

it can build successfully, but <b>failed execute.</b>

how to call the function/variable in active view?

Last Visit: 31-Dec-99 18:00 Last Update: 6-May-24 13:47

Refresh

ᐊ Prev 1...9024 9025 9026 902790289029 9030 9031 9032 9033 Next ᐅ

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