Select a row in List control with code? - C / C++ / MFC Discussion Boards

Re: Garbage in String

David Crow12-Jun-07 6:51

David Crow

12-Jun-07 6:51

Programm3r wrote:
Can anyone help ??

Doubtful, since you've not provided anything useful.

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: Garbage in String

Programm3r12-Jun-07 7:27

Programm3r

12-Jun-07 7:27

Right ... So write the following lines of code:

// Create an instance of the CIniFile class
CIniFile IniFile;
// Create a new file called test.ini
IniFile.Create("test.ini");
// Create a key
IniFile.SetValue("MyKey","MyValue","MySection",FileName);

And when I open the ini file I have garbage in the file. I haven't edited the .cpp and .h files provided by the article.

Useful enough ??

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

Re: Garbage in String

David Crow12-Jun-07 7:33

David Crow

12-Jun-07 7:33

Have you made any other changes (besides here) to the CIniFile class?

Have you stepped into the SetValue() method?

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: Garbage in String

Programm3r12-Jun-07 7:49

Programm3r

12-Jun-07 7:49

No I haven't made any changes, the only 'thing' that differs is my IDE. I'm trying to use it in C++ Builder 2006. But I can't see anything wrong with that (besides that Builder suck). Yes I have stepped into SetValues, but I'm struggling to debug ... not use to Borland debugging environment.

Oh well, I'm sure I'll figure it out ...

Thanks David
Regards,

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

Re: Garbage in String

toxcct12-Jun-07 16:30

toxcct

12-Jun-07 16:30

have you tried compiling in both UNICODE and non-UNICODE to see if that matters ?

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Draggable objects

Perspx12-Jun-07 5:55

Perspx

12-Jun-07 5:55

I would like to create an application which is basically a transparent window, or something similar, which has "objects" on it, which are images which can be dragged around the screen, and clicked on, and double clicked on etc... However, I am not sure how to implement this..

I usually work in pure C/C++ however if there are some C++ classes which allow for this i would be willing to try them out..

Thanks for your help!
--PerspX

microsoft forms 2.0 textbox

attiass12-Jun-07 5:35

attiass

12-Jun-07 5:35

hi everyone
i m using microsoft textbox 2.0 on visual c++.
i m trying to add lines to my text but i don't want to write all over again, i just want to add more text to the existing ones.
i know i can rewrite everything by using "textbox.settext("bla bla")" method
but i want to add them.i know in visual basic there's this option by using the "&" sign. does anyone know?
thanks in advance

Select a row in List control with code?

ldsdbomber12-Jun-07 4:35

ldsdbomber

12-Jun-07 4:35

I've got the complete row selection extended style working now, but would just like to know the correct method to programmatically set a row to be selected as though a user had clicked it so that it can be turned all blue.
cheers

Re: Select a row in List control with code?

David Crow12-Jun-07 4:48

David Crow

12-Jun-07 4:48

ldsdbomber wrote:
...but would just like to know the correct method to programmatically set a row to be selected...

Use the LVM_SETITEM message.

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: Select a row in List control with code?

ldsdbomber12-Jun-07 4:57

ldsdbomber

12-Jun-07 4:57

Is that via a SendMessage David? I've not used that before very much

Re: Select a row in List control with code?

David Crow12-Jun-07 5:04

David Crow

12-Jun-07 5:04

ldsdbomber wrote:
Is that via a SendMessage David?

Yes, if you are not using MFC.

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: Select a row in List control with code?

Max Santos12-Jun-07 6:07

Max Santos

12-Jun-07 6:07

You can use:

SetItemState(index,LVIS_SELECTED | LVIS_FOCUSED,LVIS_SELECTED | LVIS_FOCUSED);

http://xwega.com

Re: Select a row in List control with code?

Michael Dunn12-Jun-07 6:18

Michael Dunn

12-Jun-07 6:18

4.10 How do I programmatically select an item in a list view control?[^]

--Mike--
Visual C++ MVP Cool | :cool:

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wizard finish button and message box

misha_grewal12-Jun-07 3:44

misha_grewal

12-Jun-07 3:44

I have a property sheet with wizard style.
At one place, I need to disable the Finish button. The code doesn't work and the Finish button is enabled.
But if I put a message box before calling the SetWizardButton routine, it works.
I tried with invalidate method so as to refresh the current windows, but I guess I am missing something.
Any pointers?

evil triumphs when good people sit quiet..

Re: wizard finish button and message box

David Crow12-Jun-07 4:00

David Crow

12-Jun-07 4:00

misha_grewal wrote:
The code doesn't work and the Finish button is enabled.

What does the code look like?

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: wizard finish button and message box

misha_grewal12-Jun-07 4:41

misha_grewal

12-Jun-07 4:41

oK I digged into the problem a little bit
Is it a message queue problem?

Code ===
pWizard->SetWizardButtons(PSWIZB_BACK);

CWnd* pButton = pWizard->GetDlgItem(ID_WIZFINISH);
if (pButton) {
// this call doesn't work
pButton->EnableWindow(FALSE);
}

but if you put a message box before the call, it works, as in

if (pButton) {
AfxMessageBox(_T("text"));
// this call now WORKS
pButton->EnableWindow(FALSE);
}
Code ends ==

On the other hand, if I call a "ShowWindow" method instead of EnableWindow, it works fine with or without the message box.
What happens in EnableWindow?

Re: wizard finish button and message box

David Crow12-Jun-07 4:45

David Crow

12-Jun-07 4:45

misha_grewal wrote:
CWnd* pButton = pWizard->GetDlgItem(ID_WIZFINISH);
if (pButton) {
// this call doesn't work
pButton->EnableWindow(FALSE);

Why aren't you using:

pWizard->SetWizardButtons(PSWIZB_DISABLEDFINISH);

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: wizard finish button and message box

misha_grewal12-Jun-07 4:54

misha_grewal

12-Jun-07 4:54

Thanks much
it works with this call
i m really stupid

VS2003 for loop bug?

mcsherry12-Jun-07 2:58

mcsherry

12-Jun-07 2:58

In my Visual Studi 2003 C++ project I've got a weird bug. I have a 'normal' for loop:

int i = 0 ;
for ( i = 0 ; i < m_NumberOfObjects ; i++ ) ;
{
  m_ListObjects[i]->DoStuff ( ) ;
}

where m_NumberOfObjects is a static int (member variable) within the class.

The problem is the for loop seems o ignore the entry criteria so if i = 0 and m_NumberOfObjects = 0 is still goes in (even with i = 1 and m_NumberOfObjects replaced with a 0)

Has anyone came across this? or know what is going wrong?

TIA,
Andy

Re: VS2003 for loop bug?

mcsherry12-Jun-07 3:03

mcsherry

12-Jun-07 3:03

doesn't matter I'm an idiot, stray semi-colon D'Oh! | :doh:

Re: VS2003 for loop bug?

Mark Salsbery12-Jun-07 6:59

Mark Salsbery

12-Jun-07 6:59

mcsherry wrote:
stray semi-colon

Don't let 'em get away from you. They're feisty little buggers Smile | :)

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

Re: VS2003 for loop bug?

S Douglas12-Jun-07 20:23

S Douglas

12-Jun-07 20:23

Mark Salsbery wrote:
Don't let 'em get away from you. They're feisty little buggers

Re: VS2003 for loop bug?

_AnsHUMAN_ 12-Jun-07 3:05

_AnsHUMAN_

12-Jun-07 3:05

You should not put the ";" after the for loop Dear...
and you don't normally come across such issues if you know how does a for loop work:->

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

Re: VS2003 for loop bug?

CPallini12-Jun-07 3:08

CPallini

12-Jun-07 3:08

The bug is the semicolon ; following the for statement: an empty statement is controlled by the for expression while the code block inside the curly braces {} is always executed.

Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Re: VS2003 for loop bug?

Matthew Faithfull12-Jun-07 3:11

Matthew Faithfull

12-Jun-07 3:11

I suspect you're suffering from a change in the syntax between VC6 and Visual Studio 2003 C++ combined with a stray semi colon. The scope of counters in for loops (i in your case ) has changed so that if they're declared in the loop they can't escape from the loop. You possibly have 2 i's happening here in different scopes which is Confused | :confused:

to say the least. I now use this syntax to try and be both 'correct' and compatible

<br />
//'correct' and compatible but wouldn't help you pick up this bug<br />
int i = 0;<br />
for( ; i < m_NumberOfObjects; i++ )//Notice no ; here<br />
{<br />
  m_ListObjects[i]->DoStuff();<br />
}<br />
<br />
//recommended to prevent i leaking from scope but I dont' think you can do this anymore :doh:<br />
for( int i; i < m_NumberOfObjects; i++ )//<br />
{<br />
  m_ListObjects[i]->DoStuff();<br />
}<br />

The extra ; has caused the intended loop code to happen only once and declaring the i outside has let you get away with it Frown | :(

Perhaps that's why they changed it.

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