C / C++ / MFC Discussion Boards

Re: CFileDialog trouble

Nitron10-Dec-02 3:17

Nitron

10-Dec-02 3:17

try changing this:

CFileDialog *fileDlg = new CFileDialog(TRUE, "my", "*.my",
                                       OFN_EXPLORER | OFN_HIDEREADONLY, 
                                       szFilters, <code>this</code>);

to either

NULL

AfxGetMainWnd()

- Nitron

"Those that say a task is impossible shouldn't interrupt the ones who are doing it." - Chinese Proverb

Re: CFileDialog trouble

Andrew Medvedev10-Dec-02 22:45

Andrew Medvedev

10-Dec-02 22:45

Thanks for your reply...
"NULL", "AfxGetMainWnd()","this" perfectly work, but under win2k and XP.
NT4 don't want to show dialog. DoModal() returns IDCANCEL after call. Cry | :((

Re: CFileDialog trouble

Nitron11-Dec-02 6:39

Nitron

11-Dec-02 6:39

Andrew Medvedev wrote:
NT4 don't want to show dialog.

Hmm... I just noticed u said you are using VS7. I wonder if it's a .net thing. Try re-posting in the .net forum and see if anyone there has experienced this. Good luck.

- Nitron

"Those that say a task is impossible shouldn't interrupt the ones who are doing it." - Chinese Proverb

Window flickering in Taskbar

Ricky_TheBard10-Dec-02 1:16

Ricky_TheBard

10-Dec-02 1:16

Hy everyone! Smile | :)

does anybody can give me some help?
I want that an window of my application flicker in taskbar (if minimized)... does have any message that I can send to it?

thanks!
ps.: sorry my english Wink | ;)

-=Ricky=-

Re: Window flickering in Taskbar

Richard Green10-Dec-02 1:56

Richard Green

10-Dec-02 1:56

Take a look at the FlashWindow and FlashWindowEx functions on MSDN.

Richard

Re: Window flickering in Taskbar

Ricky_TheBard10-Dec-02 6:26

Ricky_TheBard

10-Dec-02 6:26

That's it!
Thanks Richard! Big Grin | :-D

-=Ricky=-

CListCtrl Column width

Paolo Vernazza10-Dec-02 1:13

Paolo Vernazza

10-Dec-02 1:13

I've a CLIstCtrl with the Owner data style.
It works great, but when I try to use SetColumnWidth(LVSCW_AUTOSIZE), it resizes the columns in a wrong way, because it considers only visible elements.

So I decided to detemine the max length; I tryed using either CDC::GetOutputTextExtent than CListCtrl::GetStringWidth, but both ignore the space between the column border and the text, and I can't figure howto determine the size of that... I tryed using GetSystemMetrics with SM_CXFIXEDFRAME and SM_CXEDGE, but they seem to be wrong.

Any ideat?

thanks

Re: CListCtrl Column width

Dominik Reichl10-Dec-02 2:47

Dominik Reichl

10-Dec-02 2:47

To determine the width/height of the scrollbars, use SM_CXVSCROLL/SM_CYVSCROLL as parameters.

Re: CListCtrl Column width

Paolo Vernazza10-Dec-02 4:33

Paolo Vernazza

10-Dec-02 4:33

Thanks, but it's not what I nedd...
The control (in report mode) has many column; any column has:
border (if it is visible or not depend on styles selected)
space
text
space
border.

I need to find the size of that spaces...

Re: CListCtrl Column width

Rage10-Dec-02 5:15

Rage

10-Dec-02 5:15

You could give the column header a fixed size and use LVSCW_AUTOSIZE_USEHEADER instead of LVSCW_AUTOSIZE. Anyway, you can get the longest string in the column, so just set the column width to this string width + a few pixels ? Or didn't I get the thing ?

~RaGE();

Re: CListCtrl Column width

Paolo Vernazza10-Dec-02 5:39

Paolo Vernazza

10-Dec-02 5:39

Using LVSCW_AUTOSIZE_USEHEADER has the same problem than using LVSCW_AUTOSIZE: if a non-visible string is longer than the header it isn't considered.
Yes, what i'm doing il looking for the longest text extent (not the longest string, "w" is larger than "ll") and adding some pixel. But I would like to know how much should be "some pixel"... I think it depends on system font & some other param..

I'm going crazy here ( trying to hook into session object )

Christian Graus10-Dec-02 0:43

Christian Graus

10-Dec-02 0:43

I am trying to pull the current session variables out in an ATL project, called from the asp. The code looks like this:

CContext cxt;
if ( FAILED( cxt.Init( CContext::get_All ) ) )
{
    return E_FAIL;
}

cxt.Response()->Write(_variant_t("This is a test of the veracity of my system <br/>"));

IVariantDictionary* pVD;

cxt.Session()->get_Contents(&pVD);

if (pVD)
{
    int nCount = 0;

    pVD->get_Count(&nCount);

    for (int i = 0; i < nCount; ++i)
    {
        _variant_t vItem;
        _variant_t vIndex(i);
        _variant_t vKey;
        pVD->get_Key(vIndex, &vKey);
        pVD->get_Item(vKey, &vItem);

        cxt.Response()->Write(vKey);
        cxt.Response()->Write(_variant_t(" = "));
        cxt.Response()->Write(vItem);
        cxt.Response()->Write(_variant_t("<br/>"));
    }
}

IRequestDictionary * pDic;

_variant_t v;
cxt.Session()->get_Value( L"Juju", &v);
cxt.Response()->Write(v);


cxt.Request()->get_ServerVariables(&pDic);

if (pDic)
{
    int nCount = 0;

    pDic->get_Count(&nCount);

    for (int i = 0; i < nCount; ++i)
    {
        _variant_t vItem;
        _variant_t vIndex("Juju");
        _variant_t vKey;
        pDic->get_Key(vIndex, &vKey);
        pDic->get_Item(vIndex, &vItem);

        cxt.Response()->Write(vKey);
        cxt.Response()->Write(_variant_t(" = "));
        cxt.Response()->Write(vItem);
        cxt.Response()->Write(_variant_t("<br/>"));
    }
}

and while it can pull out a session ID if I ask it to, and the response stuff works fine, I simply cannot get my hands on the variables I have shoved into the session. Does anyone have any ideas ?

Christian

No offense, but I don't really want to encourage the creation of another VB developer. - Larry Antram 22 Oct 2002

C# will attract all comers, where VB is for IT Journalists and managers - Michael P Butler 05-12-2002

Again, you can screw up a C/C++ program just as easily as a VB program. OK, maybe not as easily, but it's certainly doable. - Jamie Nordmeyer - 15-Nov-2002

Re: I'm going crazy here ( trying to hook into session object )

Alvaro Mendez10-Dec-02 5:11

Alvaro Mendez

10-Dec-02 5:11

So which lines are not working as you'd expect? Are you getting the value for "Juju" back in this line: cxt.Session()->get_Value( L"Juju", &v);?

I don't think you're gonna get Juju's value out of the bottom for loop. There you're looping through the SERVER variables -- the ones from the HTTP header, which look like this: AUTH_TYPE, CONTENT_LENGTH, REMOTE_ADDR, SERVER_PORT.

Also, I'd recommend creating variables like request and response at the top of the code. Something like this:

IRequest request = cxt.Request();<br />
IResponse response = cxt.Response();

Then you can just do response.Write(...), which seems more efficient and easier to read.

Regards,
Alvaro

Well done is better than well said. -- Benjamin Franklin
(I actually prefer medium-well.)

Re: I'm going crazy here ( trying to hook into session object )

Christian Graus10-Dec-02 15:14

Christian Graus

10-Dec-02 15:14

Alvaro Mendez wrote:
So which lines are not working as you'd expect?

The first collection is empty, that's the one I expect to contain the session variables.

Alvaro Mendez wrote:
Are you getting the value for "Juju" back in this line: cxt.Session()->get_Value( L"Juju", &v);?

No, I am getting VT_EMPTY back. My test string is rendered in my page, but I cannot get ahold of the session variable, which I create in the asp like this

Session("Juju") = "The Dog Faced Boy"

Alvaro Mendez wrote:
I don't think you're gonna get Juju's value out of the bottom for loop

I didn't expect to - I want the session ID as well. The one that is called ASPSESSIONID with garbage after it. Instead I am getting a load of = signs, there are a lot of values there, but I cannot figure how to pull them out. I put 'Juju' in there as an act of desperation, but I was populating that variant with the index of my for loop and expected to be able to iterate through the keys that way, it does not work.

Thanks for helping me with this.

Christian

No offense, but I don't really want to encourage the creation of another VB developer. - Larry Antram 22 Oct 2002

C# will attract all comers, where VB is for IT Journalists and managers - Michael P Butler 05-12-2002

Again, you can screw up a C/C++ program just as easily as a VB program. OK, maybe not as easily, but it's certainly doable. - Jamie Nordmeyer - 15-Nov-2002

get__NewEnum problem.

Christian Graus10-Dec-02 0:28

Christian Graus

10-Dec-02 0:28

I have a couple of different COM interfaces, including IRequestDictionary, the problem with all is the same. They have a get__NewEnum method which supposedly gives me a 'for each' type iteration over the container, but which I cannot get to work and the MSDN docs are woeful. Does anyone have any suggestions ?

Christian

No offense, but I don't really want to encourage the creation of another VB developer. - Larry Antram 22 Oct 2002

C# will attract all comers, where VB is for IT Journalists and managers - Michael P Butler 05-12-2002

Again, you can screw up a C/C++ program just as easily as a VB program. OK, maybe not as easily, but it's certainly doable. - Jamie Nordmeyer - 15-Nov-2002

Re: get__NewEnum problem.

Michael P Butler10-Dec-02 1:03

Michael P Butler

10-Dec-02 1:03

You've probably already seen this one , but I've used this article in the past and it works okay for me.

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vccore/html/vcconImplementingSTLBasedCollection.asp[^]

Michael

Fat bottomed girls
You make the rockin' world go round -- Queen

Large ToolbarButtons

Mr Bose Dayala10-Dec-02 0:13

Mr Bose Dayala

10-Dec-02 0:13

Hi
Please go through this situation

My ManagerApplication will be embedded into HubApplication and one of the Submenu from my Main menu and a Toolbar will also be embedded.If the user selects Tools->LargeIcons from the Main menu of the HubApplication my Toolbar(which is embedded into) is not getting changed to LargeIcons.For this will MFC take care or we should implement?if so can anybody help me with code??thanks in advance

ThomasKennedy

ThomasKennedy

Large ToolbarButtons

Mr Bose Dayala10-Dec-02 0:12

Mr Bose Dayala

10-Dec-02 0:12

Re: Large ToolbarButtons

KaЯl10-Dec-02 3:03

KaЯl

10-Dec-02 3:03

ThomasBoseKenn wrote:
.For this will MFC take care

Nope, the MFC framework is not responsible for that. You may search in the article part of this site, you may probably find some articles to help you using large buttons on toolbars.
Another way could be to use external components/extensions which would manage this (and much more) for you. A good example of these is the library BCG[^]

I hurt so bad inside
I wish you could see the world through my eyes
It stays the same
I just wanna laugh again

Please take a look if this is ok!

Daniel Strigl9-Dec-02 23:12

Daniel Strigl

9-Dec-02 23:12

Is this code ok?
I read a BSTR with a COM-Function, convert the string to uppercase and check if it is a defined string.

USES_CONVERSION;

CComBSTR bstrTag;

VERIFY(pElement->get_tagName(&bstrTag) == S_OK);

if (_tcscmp(_tcsupr(OLE2CT(bstrTag)), _T("WALLPOINT")) != 0)
{
    ....
}

Daniel

---------------------------
Never change a running system!

Re: Please take a look if this is ok!

Iain Clarke, Warrior Programmer9-Dec-02 23:48

Iain Clarke, Warrior Programmer

9-Dec-02 23:48

I'm no expert at com and bstrs, so I can't actually help you with your question. But I can help you help yourself.

If you give your questions a more meaningful title, you might get someone who CAN help you reading it.

As for this particular questions, there are some obvious points:

The answer is "No, as you wouldn't be asking if it did work".
Or does this code snippet work, but you are concerned it might not work always?

Please don't take this as a flame; I like this forum, and the people who frequent are very helpful. But they need your input too.

Iain.

Re: Please take a look if this is ok!

Daniel Strigl10-Dec-02 1:02

Daniel Strigl

10-Dec-02 1:02

... sometimes my fingers are faster than my brain ...

Thanks Iain!

Daniel Wink | ;)

---------------------------
Never change a running system!

Does this work?

Daniel Strigl9-Dec-02 23:01

Daniel Strigl

9-Dec-02 23:01

I want to convert a BSTR to a TCHAR* string, without using the _bstr_t class. I only work with CComBSTR and the pur BSTR.

I found some code, but I think that the code is not ok.

USES_CONVERSION;

CComBStr bstrName;
foo->get_Name(&bstrName);
LPCTSTR szName = OLE2T(bstrName);

Is the code ok? Can I convert a BSTR with the OLE2T macro? Is a OLECHAR the same as a BSTR?

Daniel Wink | ;)

---------------------------
Never change a running system!

Qe. regarding NM_RETURN in CTreeView

alex_the_guy9-Dec-02 22:18

alex_the_guy

9-Dec-02 22:18

Hi,
I am using a CTreeView in a ControlBar tab. I have checked TVS_EDITLABELS style while creating this view. I want to dissmiss the Edit box during label editing when user press return. The concerned view is not the main view of my application and is contained in a CTabCtrl in a ControlBar and not any CChildFrame. So the PreTranslateMessage of the mainframe does not route this messages to this view. I can override the PreTranslateMessage to do the same but if there is any other means to process the return key from this treeview or if anyone has ever faced and solved this problem please reply.
regards

Alex

Bitmaps

SatyaDY9-Dec-02 21:58

SatyaDY

9-Dec-02 21:58

Hi friends,
I am a c++ programmer. I want to convert bmp file to png. Can anybody suggest some libraries or links in this regard? How it will work?
Thanks
Smile | :)

Satya

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