Re: How to use CScrollBar from a template? - C / C++ / MFC Discussion Boards

hulinning1-Jul-05 8:47

1-Jul-05 8:47

Hi all,
I try to access to VB com collection Item method but I got a bad type error.
I import VB COM library into vc++ application. From the smart pointer of the collection, the function requests a VARIANT* data type. I create a variant variable as assigned 1 to it to get first item in the collection.

Here is my code:
_clsMacManPtr Mac ;
if ( Mac->ReadDailyMachiningReport (bstrFilePath) != 0 )
{
Reports = Mac->GetDailyMachiningReport () ;

if ( Reports->Count > 0 )
{
vValue.iVal = 1 ;

Report = Reports->GetItem(&vValue ) ; // failed here

bstrValue = Report->NoWork ;

}
}

I appreciate for any comments

Re: Accessing VB Com collection Item

Jose Lamas Rios1-Jul-05 9:15

Jose Lamas Rios

1-Jul-05 9:15

linhjob wrote:
Report = Reports->GetItem(&vValue ) ; // failed here

What is the error message?

--
jlr
http://jlamas.blogspot.com/[^]

Re: Accessing VB Com collection Item

Anonymous5-Jul-05 15:39

Anonymous

5-Jul-05 15:39

I got a bad data type error.

Re: Accessing VB Com collection Item

Anonymous5-Jul-05 15:39

Anonymous

5-Jul-05 15:39

I got a bad data type error.

Re: Accessing VB Com collection Item

Jose Lamas Rios5-Jul-05 17:06

Jose Lamas Rios

5-Jul-05 17:06

Anonymous wrote:
I got a bad data type error.

Yep, you said that before. But, what was/is the exact error message? The error message should say something like "cannot convert from xxxxx to yyyyy."

--
jlr
http://jlamas.blogspot.com/[^]

Re: Accessing VB Com collection Item

hulinning10-Jul-05 5:00

hulinning

10-Jul-05 5:00

Yes, that is the error message I got it by catching com error.
I have to create a function that passes an integer to get the an item from vb collection to get around this. However, I wonder why it would not work with variant variable.
But if you do know please let me know.
Thanks for you comments

How to use CScrollBar from a template?

IlanTal1-Jul-05 8:47

IlanTal

1-Jul-05 8:47

I want to have a scrollbar in a dialog box, so I drag it in at design time. Then I want to attach this to a control m_myScroll.
My problem is that I don't know what to do with the Create function.
The create function wants me to specify a CRect with the size of the scrollbar, but I've already fixed its size at design time (as well as its position).
The Create function asks me for a nID, which I give it from the dialog box value of the scrollbar I dragged onto the form.
Also the Create function talks about a ShowScrollBar, which is also not clear to me. After all, I've already defined it on my form.

I'm confused and what I've written doesn't work, so I'm doing something wrong. Can anyone help me?

Thanks,
Ilan

Re: How to use CScrollBar from a template?

Cedric Moonen1-Jul-05 9:20

Cedric Moonen

1-Jul-05 9:20

Hi Ilan,

You don't need to call Create (and you cannot, in your case). Create is used only if you create your ScrollBar (and this is true for any other control) at runtime. In your case, you use the resource editor so this is done automatically. Just drop it on your dialog and attach a control to it. And that's it !

Re: How to use CScrollBar from a template?

IlanTal2-Jul-05 19:12

IlanTal

2-Jul-05 19:12

Thanks again for the help. Apparently I didn't tell you the whole truth. In fact, I'm using a CDialogBar not a CDialog object. In the CDialogBar, it doesn't have the Add Variable object, so I did it manually with the DDX control.
Apparently, it is not for nothing that the Add Variable doesn't exist. The problem is that the CSrollBar has no window so it keeps crashing on the ASSERT check on the window. I tried my best to set the window, but with no success. I may have no choice but to actually create the scroll bar with the Create command and not drop it in at design time.

Thanks,
Ilan

Re: How to use CScrollBar from a template?

Jose Lamas Rios1-Jul-05 9:23

Jose Lamas Rios

1-Jul-05 9:23

IlanTal wrote:
I want to have a scrollbar in a dialog box, so I drag it in at design time. Then I want to attach this to a control m_myScroll.
My problem is that I don't know what to do with the Create function.

You don't need to call Create directly. Just add a DDX_Control for it in your dialog's DoDataExchange implementation:

void YourDialog::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(YourDialog)
	DDX_Control(pDX, IDC_MYSCROLL, m_myScroll);
	//}}AFX_DATA_MAP
}

This gets called during dialog initialization (CDialog::OnInitDialog) and does all the work for you.

--
jlr
http://jlamas.blogspot.com/[^]

clipping child windows

nt231-Jul-05 7:29

nt23

1-Jul-05 7:29

Hi All.
I have a window which has child windows of two types.
The child windows can be of non-rectangle shape.
I need to exclude from painting the areas occupied by
windows of the first type but not the second ones.
If I create the window with the WS_CLIPCHILDREN option,
I'll get the both types of child windows excluded.
What might be the best way to implement this using
VC++ and MFC?
I've looked towards regions but at the moment it looks a
little bit difficult comparing with just specifying one
option.
Thanks.

Re: clipping child windows

John R. Shaw2-Jul-05 19:05

John R. Shaw

2-Jul-05 19:05

1) WS_CLIPCHILDREN appies mainly to OnEraseBkgnd(), so override it to return success.
2) Do all your drawing in OnPaint() or OnDraw().
3) Draw what you need and then exclude there regions or rects.
4) Draw background.

Beyond that, your question does not make much since.

INTP
"The more help VB provides VB programmers, the more miserable your life as a C++ programmer becomes."
Andrew W. Troelsen

theme

Lampros Giampouras1-Jul-05 6:34

Lampros Giampouras

1-Jul-05 6:34

How can I change the theme of my program? I want to change this classic gray theme and put something else...

Re: theme

Alexander ^M.,1-Jul-05 6:57

Alexander ^M.,

1-Jul-05 6:57

Simple theme or visual style?

Don't try it, just do it! Wink | ;-)

Re: theme

Lampros Giampouras1-Jul-05 9:21

Lampros Giampouras

1-Jul-05 9:21

I don't know, what's the difference? Tell me both if you know Wink | ;)

Re: theme

Alexander ^M.,1-Jul-05 10:56

Alexander ^M.,

1-Jul-05 10:56

Visual styles is the feature of xp, which enables you to change the complete design of the windows ui (e.g. the blue design or the silver design.. you know what I mean?). Themes are concerning just the color of controls and windows, sounds, icon spacings, text sizes, etc.
So if you just want to change the e.g. the title bar color to red, you can use SetSysColors.
For other settings use SystemParametersInfo.
Have a look here for more APIs: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/sysinfo/base/system_information_functions.asp[^]

Don't try it, just do it! Wink | ;-)

Re: theme

badal_akr4-Jul-05 22:07

badal_akr

4-Jul-05 22:07

Can you please elaborate what exactly do you want to do.
What is theme? Big Grin | :-D

Anil Kumar

How can I handle message of a class that drived from COleControl?

Behzad Ebrahimi1-Jul-05 6:30

Behzad Ebrahimi

1-Jul-05 6:30

How can I handle message of a class that drived from COleControl?

I added some function like WndProc(...), but program does NOT reach them!?

Re: How can I handle message of a class that drived from COleControl?

Jose Lamas Rios1-Jul-05 8:37

Jose Lamas Rios

1-Jul-05 8:37

Behzad Ebrahimi wrote:
How can I handle message of a class that drived from COleControl?

I added some function like WndProc(...), but program does NOT reach them!?

You need to use a message map. Take a look here:
Message Handling and Mapping[^]

--
jlr
http://jlamas.blogspot.com/[^]

scroll bar problem

softtec1-Jul-05 6:22

softtec

1-Jul-05 6:22

can anybody help!
i am creating check boxes at run time in the Statc group box.and i want if the no. of check boxes are upto 13 a scroll bar will added vertically on static group box and further check boxes will create in that group box.but i dont know how i do this

Re: scroll bar problem

David Crow1-Jul-05 7:02

David Crow

1-Jul-05 7:02

Use a checklist box. See CCheckListBox.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

tioOnSize Question

jerry1211a1-Jul-05 6:01

jerry1211a

1-Jul-05 6:01

I have a dialog application that contains OnSize() to handle the resizing messages. I have a Window containing an activex control. When resizing the Window, the ActiveX Control fills the entire dialog Window. I dont want to fill the entire Window. Does anyone know how to control the sizing of the activex control??

Jerry

Re: tioOnSize Question

toxcct1-Jul-05 6:06

toxcct

1-Jul-05 6:06

Can't you use SetWindowsPos() on it ?

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

Re: tioOnSize Question

ThatsAlok1-Jul-05 19:06

ThatsAlok

1-Jul-05 19:06

Handle WM_GETMINMAXINFO message

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

cheers,
Alok Gupta

DirectShow filter issue

Alexander ^M.,1-Jul-05 5:33

Alexander ^M.,

1-Jul-05 5:33

Hi everyone.
I'm coding a source filter and a demultiplexer filter for DirectShow.
When I add the filters to the graph, connect the pins and render the whole thing it still works.
But when I run the graph via IMediaControl::Run it returns S_FALSE.
The SDK says that I should use IMediaControl::GetState after Run() has failed, but GetState() does never return when I have INFINITE as timeout, else it returns an error (VFW_S_STATE_INTERMEDIATE), too.
The graph uses Push-Mode.

Is there a way I can find out what is going wrong?
Thanks for advice,
Alex

Don't try it, just do it! Wink | ;-)

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