C / C++ / MFC Discussion Boards

in CListBox we have a Function OnSelectChange().when the selection in the list box change then i call this dailog by
writing following code
if(m_list.GetCurSel==LB_ERR)
{
}
else
{
pop1= new CPopupDlg();
pop1->Create(IDD_DIALOG1,this);
pop1->ShowWindow( SW_SHOW );
}
once i change the selection i want to disable that dialog .

Re: how to diable the popup dialog in main dialog

Naveen8-Jun-06 20:18

Naveen

8-Jun-06 20:18

Then where do u want to write pop1->EnableWindow( FALSE );

I thing ur getting another pointer while calling

pop1->EnableWindow( FALSE );

nave

Re: how to diable the popup dialog in main dialog

happy_ram8-Jun-06 20:22

happy_ram

8-Jun-06 20:22

when we want select another one then it will check if condition if it is true then i will keep that EnableWinbow().
but t's not working

Re: how to diable the popup dialog in main dialog [modified]

Naveen8-Jun-06 20:33

Naveen

8-Jun-06 20:33

try modifying the function like this

static CPopupDlg pop1;
if( 0 == pop1.m_hWnd )
{
pop1.Create(IDD_DIALOG1,this);
pop1.ShowWindow( SW_SHOW );
}
if( /*the condition*/ )
{
// Disable the dialog
pop1.EnableWindow( FALSE );
}
else
{
// enable the dialog
pop1.EnableWindow( TRUE );
}

nave

Re: how to diable the popup dialog in main dialog [modified]

happy_ram8-Jun-06 20:46

happy_ram

8-Jun-06 20:46

enable is done but disable is not working.
i think this enable also due to pop1.ShowWindow(SW_SHOW);
without pop2.EnableWindow( TRUE ) also we can get the dialog.
but without pop1.ShowWindow(SW_SHOW); not getting the dialog

Re: how to diable the popup dialog in main dialog [modified]

Naveen8-Jun-06 21:16

Naveen

8-Jun-06 21:16

send me the code i will check and tell

nave

Re: how to diable the popup dialog in main dialog

Hamid_RT8-Jun-06 20:47

Hamid_RT

8-Jun-06 20:47

i think you can use these functions once no
if(m_list.GetCurSel!=LB_ERR)
{
pop1= new CPopupDlg();
pop1->Create(IDD_DIALOG1,this);
}...repeat

whitesky

Re: how to diable the popup dialog in main dialog

happy_ram8-Jun-06 20:52

happy_ram

8-Jun-06 20:52

i used the same thing but not getting the desired result

Re: how to diable the popup dialog in main dialog

Hamid_RT8-Jun-06 19:56

Hamid_RT

8-Jun-06 19:56

check for return from these functions
BOOL o=EnableWindow and BOOL o=ShowWindow
if o=1 so this function is run else no

whitesky

Difference between WINAPI and CALLBACK

NiceNaidu8-Jun-06 18:42

NiceNaidu

8-Jun-06 18:42

Hi friends,

1.In Windows both WINAPI and CALLBACK are declared as _stdcall.
what is the exact difference between them ??

2.if the default calling convention in windows is _stdcall,then what is the use of preceding the functions with WINAPI ??

3.Is void MyFunc() same as void _stdcall MyFunc() in windows??

4.What is difference between normal functions and CALLBACK functions ??

Thanks in Advance.

Appu..
"If you judge people, you have no time to love them."

Re: Difference between WINAPI and CALLBACK

ThatsAlok8-Jun-06 19:13

ThatsAlok

8-Jun-06 19:13

NiceNaidu wrote:
Hi friends,

1.In Windows both WINAPI and CALLBACK are declared as _stdcall.
what is the exact difference between them ??

If declared as same then they are same!

NiceNaidu wrote:
2.if the default calling convention in windows is _stdcall,then what is the use of preceding the functions with WINAPI ??

3.Is void MyFunc() same as void _stdcall MyFunc() in windows??

4.What is difference between normal functions and CALLBACK functions ??

i am sorry to say that , you should consult MSDN before posting it here

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

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief and You

Re: Difference between WINAPI and CALLBACK

NiceNaidu8-Jun-06 19:26

NiceNaidu

8-Jun-06 19:26

Hi Alok,

Thanks for the help.

I have searched MSDN for these before i post.But did n't get enough help.Thats the reason why i posted here.

If at all, you find any supporting links, Can u post them here.

Thanks again,

Appu..
"If you judge people, you have no time to love them."

Re: Difference between WINAPI and CALLBACK

Hamid_RT8-Jun-06 19:21

Hamid_RT

8-Jun-06 19:21

And seeWhat Is a Callback Function?[^] maybe it is some helpful to you

whitesky

Re: Difference between WINAPI and CALLBACK

Ryan Binns8-Jun-06 19:51

Ryan Binns

8-Jun-06 19:51

1. Nothing. They are used for different purpose - WINAPI is used for Windows API function calls, CALLBACK is used for callback functions that you define. It's purely so developers can tell the difference between what the functions are used for.

2. The default calling convention for C and C++ is cdecl, not stdcall.

3. No. The first one has the cdecl calling convention, the second is stdcall.

4. A function marked with CALLBACK uses the stdcall calling convention, rather than the usual cdecl. This means that the parameters are popped off the stack by the function, rather than the caller. For cdecl functions, the parameters are popped off the stack by the caller.

Ryan

"Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"

Re: Difference between WINAPI and CALLBACK

NiceNaidu8-Jun-06 20:00

NiceNaidu

8-Jun-06 20:00

Thanks Ryan,

This is what i am looking for..
Thanks WhiteSky.The link is very informative.

Keep going.

Thanks again.

Appu..
"If you judge people, you have no time to love them."

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