C / C++ / MFC

Re: Calling All CListCtrl Experts

7-Sep-05 20:41

What would you say of using those dialog boxes within a "Document-View" architecture.
It's like embedding some dialog boxes in a word document (which actually is doing more than scrolling information Smile | :)

)

SkyWalker

Spoodles8-Sep-05 3:11

Spoodles

8-Sep-05 3:11

A good thought, but this is a mature app and changing it to doc-view is not an option at this point. More than scrolling information, the dialogs have there own controls, so they are interactive. I may go to a paging scheme instead of scrolling. The downside to this is the need to support specific monitor resolutions -- running at 1280x1024 I can fit 6 per page, running at 1024x768 I may only fit 2.

Re: Calling All CListCtrl Experts

Mircea Puiu8-Sep-05 4:02

8-Sep-05 4:02

Yes, probably attaching each of them to one tab of a multi-tab control will be the best solution.

SkyWalker

-- modified at 10:17 Thursday 8th September, 2005

Updating CheckBoxes

DanYELL7-Sep-05 5:08

DanYELL

7-Sep-05 5:08

I have alot of checkboxes on a screen. At the bottom of the
screen, I have two checkboxes, m_check20 and m_check21, and
only one of them can be checked. So I set up this code:

void CPage1::OnCheck20()
{
m_check20 = 1;
m_check21 = 0;

UpdateData(FALSE);
}

and I did almost the same for OnCheck21. The problem is, when
this code is run, the UpdateData(FALSE) commands resets all of
the checkboxes that were at the top of the screen (m_check1 ...
m_check19).

How can I update just m_check20 and m_check21 without updating
the rest of the check boxes on that page?

Please, any response any one can give me will be greatly
appreciated.

Sincerely,
Danielle Brina (an overworked graduate student)

Mircea Puiu7-Sep-05 5:18

7-Sep-05 5:18

Don't use UpdateData() for that purpose.
Get a pointer to the desired check-box control:
CButton *pCB = (CButton *)GetDlgItem(your check box id here);
Then call pCB->SetCheck(nCheck)
where nCheck is 0 for unchecked state and 1 for checked state.

SkyWalker

DanYELL7-Sep-05 5:57

DanYELL

7-Sep-05 5:57

One last question.

I put together this:

void SetCheckbox(int nID, bool state)
{
CButton *pCB = (CButton *)GetDlgItem(nID);
if (pCB)
pCB->SetCheck(state);

delete pCB;
}

and so I call:

SetCheckbox(IDC_CHECK20, 1);
SetCheckbox(IDC_CHECK21, 0);

But when I compile, I get this error:

error C2664: 'GetDlgItem' : cannot convert parameter 1 from 'int' to 'struct HWND__ *'

The function GetDlgItem takes 2-variables, int nID and HWND *phWnd. I tried using null for the 2nd variable (phWnd) but it
wont work. How can I clean this up to work?

Please, any response you can give me will be greatly appreciated.
I have alot of check boxes and need to condense.

Sincerely,
Danielle Brina (an overworked graduate student)

bugDanny7-Sep-05 9:18

bugDanny

7-Sep-05 9:18

The GetDlgItem function retrieves the handle of a control in the specified dialog box.

HWND GetDlgItem(
HWND hDlg, // handle of dialog box
int nIDDlgItem // identifier of control
);

Notice the above text from MSDN.

DanYELL wrote:
I tried using null for the 2nd variable

Don't use NULL for the 2nd variable:
(1) Because the HWND structure was supposed to be the first variable, hence your original error:
DanYELL wrote:
error C2664: 'GetDlgItem' : cannot convert parameter 1 from 'int' to 'struct HWND__ *'

(2) Because the HWND parameter in GetDlgItem is supposed to be the handle of the dialog that this dialog item is on. Try possibly, this, the word "this" referring to "the current dialog".

The simpler, though perhaps more unpopular/messier way would be to use UpdateData(), but not UpdateData(FALSE). The check boxes usually function pretty cool by themselves (i.e. checking an unchecking themselves when you click on them), but you're trying to control a partner check box. So, try something like:

<br />
void OnCheck20(void){<br />
  UpdateData(TRUE); //This gets the current state of all the dialog items, so you won't be overwriting anything.<br />
<br />
  if(m_Check20 == true){<br />
    m_Check21 = false;<br />
    UpdateData(FALSE);<br />
  }<br />
  else if(m_Check20 == false){ // The user just hit the button from true to false.<br />
    // Do nothing, if you want the user to be able to unselect these options.<br />
  }<br />
}<br />

Write a similar function for the other check box. You just gotta use the UpdateData(TRUE) so you don't change all the other controls to their last updated state.

Danny

Mircea Puiu7-Sep-05 20:09

7-Sep-05 20:09

I've just sent by e-mail a small test VC project
showing what you need Smile | :)

)

SkyWalker

toxcct7-Sep-05 5:42

toxcct

7-Sep-05 5:42

if only one check box is to be checked, use radio buttons instead.

however, you don't test if the checkbox is effectively checked or not - because the event handler is called wether you check or uncheck it.

void CPage1::OnCheck20() {
    UpdateData()
    if (m_check20 == TRUE) {
        // Uncheck all the other boxes only if we check this one...
        m_check21 = FALSE;
        UpdateData(FALSE);
    }
}
 
void CPage1::OnCheck21() {
    UpdateData()
    if (m_check21 == TRUE) {
        // Uncheck all the other boxes only if we check this one...
        m_check20 = FALSE;
        UpdateData(FALSE);
    }
}

TOXCCT >>> GEII power
[toxcct][VisualCalc]

David Crow7-Sep-05 6:25

7-Sep-05 6:25

DanYELL wrote:
The problem is, when
this code is run, the UpdateData(FALSE) commands resets all of
the checkboxes that were at the top of the screen (m_check1 ...
m_check19).

Which is one of the many reasons to not use the function. See here for more.

DanYELL wrote:
How can I update just m_check20 and m_check21 without updating
the rest of the check boxes on that page?

Have a CButton member variable for each checkbox. Use the SetCheck() and GetCheck() methods.

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

Jack Puppy7-Sep-05 15:37

Jack Puppy

7-Sep-05 15:37

You could also use the CheckDlgButton function.

<br />
CheckDlgButton(IDC_CHECK20, 1);<br />
CheckDlgButton(IDC_CHECK21, 0);<br />

He is smart. He will make our Windows go.

Dll and XP theme

hari_rs7-Sep-05 4:02

hari_rs

7-Sep-05 4:02

hi
I created a shell extension DLL (MFC). But even though I've included manifest file, the DLL's dialogs are not themed. Can anyone help please ?

regards
hari

Hari Krishnan

Re: Dll and XP theme

Mircea Puiu7-Sep-05 5:11

How to get the time taken by application

7-Sep-05 5:11

From MSDN:
"That manifest file must be named correctly (<your .exe="" name="">.manifest) and must be in the same directory as the .exe file for your application to take on the correct appearance"

SkyWalker

Re: Dll and XP theme

pranavamhari7-Sep-05 5:39

pranavamhari

7-Sep-05 5:39

thanks for the reply, but..

manifest file is included as a resource, not as a seperate file.

Yes, i've tried using it as a seperate file, but it does not work. (plz note, I've other exes that work correctly. The problem occurs only if I use the resource in this dll)

Hari Krishnan

Re: Dll and XP theme

ThatsAlok7-Sep-05 18:43

ThatsAlok

7-Sep-05 18:43

pranavamhari wrote:
Yes, i've tried using it as a seperate file, but it does not work. (plz note, I've other exes that work correctly. The problem occurs only if I use the resource in this dll)

these article may help:-
MANUALLY EMBEDDING MANIFEST FILE:-

http://www.codeproject.com/w2k/makexp.asp[^]

AUTOMATE MANIFEST FILE LINKING:-
http://www.codeproject.com/macro/ManifestMacro.asp[^]

"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

Anonymous7-Sep-05 4:01

Anonymous

7-Sep-05 4:01

Hi Friend,
I am working on application developement and i have to enhance the speed of existing application. So i need to know the time taken by the application. Is there any programmatical way to find out the time taken by application.

Thanks

David Crow7-Sep-05 4:15

7-Sep-05 4:15

An actual profiler would be your best bet, but you can use GetTickCount() to get reasonably close.

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

Trollslayer7-Sep-05 4:43

Trollslayer

7-Sep-05 4:43

I haven't used the profiler in VS2005 but the profiler in VC++6.0 is useful.
It shows the number of times a function was called in addition to the time spent there.
You can also use it to get an idea of which sections of your code are used under various circumstances.

Elaine Rose | [Rose]

The tigress is here Big Grin | :-D

David Crow7-Sep-05 6:41

7-Sep-05 6:41

Trollslayer wrote:
...the profiler in VC++6.0 is...

...located where?

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

Graham Bradshaw7-Sep-05 7:01

Graham Bradshaw

7-Sep-05 7:01

It's not in all editions (Professional and Enterprise, IIRC) - if you have it it'll be on the Build menu, right at the bottom. You need to enable profiling in the link options first.

David Crow7-Sep-05 7:32

7-Sep-05 7:32

Thanks. That menu option was not initially enabled because I was missing the following registry value:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\DevStudio\6.0\General\ProfilerInstalled

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

ThatsAlok7-Sep-05 19:01

ThatsAlok

7-Sep-05 19:01

DavidCrow wrote:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\DevStudio\6.0\General\ProfilerInstalled

What Key or Value, I have to enter here to Enable Profiler

"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

David Crow8-Sep-05 2:12