Re: Modal dialogs fon't show after main dialog shuts down - C / C++ / MFC Discussion Boards

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My bad I though Error lookup tool was for compiler errors..

Raskolnikov1-Aug-02 11:33

Raskolnikov

1-Aug-02 11:33

The compiler error was fine, what I was upset about was the result I got when I tried to find further informaiton about the error using the error lookup tool, which I know now has nothing to do with compiler errors.

Anyway I have been using C++ compilers for years, mainly with compand line compilers like gcc but I have never heard of precomiled headers or precomiled header directives. The Visual C++ .NET book I am just read fails to mention them.

Splash screen

hongheo7631-Jul-02 4:31

hongheo76

31-Jul-02 4:31

Hi,

Can anyone tell me how to make a Splash Screen using VC++ ?

I am used to the Visual Basic style :

frmSplash.show
do our initialization work
frmSplash.hide

With VC++, when I create a splash screen dialog box, then write:

CSplashDialog dialog;
dialog.DoModal();
Sleep(1000); /* or do my init stuff */
dialog.EndDialog();

It seems like the system gets stuck in the dialog.DoModal() function.

How to change the code ? Do I have to do my stuff inside my splash dialog ?

Thanks a lot

Re: Splash screen

Nish Nishant31-Jul-02 4:43

Nish Nishant

31-Jul-02 4:43

Show a modeless dialog. Once you've done your stuff, post a user-defined message to the modeless dialog and close it in the message handler. For more info on modeless dialogs see this article :-

http://www.codeproject.com/dialog/gettingmodeless.asp

Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Re: Splash screen

Tomasz Sowinski31-Jul-02 4:48

Tomasz Sowinski

31-Jul-02 4:48

If you're using VC6, go to Project/Add to project/Components and controls/Visual C++ components. There's a Splash Screen component which is ready to use.

Tomasz Sowinski -- http://www.shooltz.com

- It's for protection
- Protection from what? Zee Germans?

FtpGetFile Issue

RichB31-Jul-02 4:29

RichB

31-Jul-02 4:29

All,

I was wondering if anyone has had issues with FtpGetFile. This behavior is rather odd; the file is there but cannot be downloaded. I have had my remote user check out the file security/privileges; they appear to be in order. I would like to be able to provide more information. However, since this is happening at a remote site, I do not have more information. Does anyone have any ideas?

Thanks in Advance,

Rich

How to read the unicode string from a file?

Neha31-Jul-02 3:34

Neha

31-Jul-02 3:34

Hi,
How can i read the unicode string from a file?
Thanks
Neha

Modal dialogs fon't show after main dialog shuts down

Tre K Renegade31-Jul-02 3:31

Tre K Renegade

31-Jul-02 3:31

Hi people,

A small question.

In a dialog-based app, why is it impossible to start up a new dialog after the main dialog closes? (i.e. right after the DoModal returns in the app's InitInstance handler)

Even when you try to pop up a simple MessageBox it doesn't show. You can just hear the typical MessageBox 'Bling', but then the app shuts down.

Can anyone explain why this is the case? And what I should do to achieve my goal: showing a 'saving, please wait' dialog after the users hits finish in my wizard.

Thanks a lot for your help,

ren

Re: Modal dialogs fon't show after main dialog shuts down

Nish Nishant31-Jul-02 4:03

Nish Nishant

31-Jul-02 4:03

This article explains what you are looking for :-

http://www.codeproject.com/dialog/dlgboxtricks.asp

Scroll down to the last tip titled - "Show MessageBox after main dialog is dismissed"

The method described there works not only for msgboxes but also for further modal dialogs.

Nish

Author of the romantic comedy

Summer Love and Some more Cricket [New Win]

Review by Shog⁹
Click here for review[NW]

Re: Modal dialogs fon't show after main dialog shuts down

Tre K Renegade31-Jul-02 4:34

Tre K Renegade

31-Jul-02 4:34

Perfect.

Thanks a lot.

How to set font

Al_Pennyworth31-Jul-02 3:06

Al_Pennyworth

31-Jul-02 3:06

Hey, I posted this once and I am hoping to get some suggestions this time. If nobody knows, hey, that is life. I am trying to set the font/color, etc, for text in a multiline text editor. The user can highlight as many lines (or chars) as he/she wants, and then change all the text that has been selected to the font/color. The problem is that it is not working. I get the font characteristics, then call EM_SETCHARFORMAT with the SCF_SELECTION. According to MS website, this will change all the selected text. It doesn't. It seems, when there is a carriage return or word wrap of some kind, it cannot handle these characters. So it only changes 1 line. I do not know how to get around this. I have used EM_EXGETSEL and then send EM_EXSETSEL, this doesn't help either. Does anybody have any ideas? I have no clue how to get around the word break chars.

Re: How to set font

Fred D.31-Jul-02 3:35

Fred D.

31-Jul-02 3:35

have a look to this article :
http://www.codeproject.com/staticctrl/clabel.asp

and also :

CFont & LOGFONT where you can specified the type of font etc.

Fred

Re: How to set font

Alexandru Savescu31-Jul-02 4:11

Alexandru Savescu

31-Jul-02 4:11

I think it will be much easier should you use a rich edit control.

Best regards,
Alexandru Savescu

Re: How to set font

Tomasz Sowinski31-Jul-02 4:24

Tomasz Sowinski

31-Jul-02 4:24

LOL

Tomasz Sowinski -- http://www.shooltz.com

- It's for protection
- Protection from what? Zee Germans?

Problems with updating edit control

Janine31-Jul-02 1:50

Janine

31-Jul-02 1:50

Hello,

I have a problem with an edit control. It doesn't get updated until I show a MessageBox.

I have a variable attached to the edit control called m_szText. From outside view class I call a function

void MyView::AddText(CString szNewText)
{
	m_szText += szNewText;

	if ( UpdateData(FALSE) )
		std::cout << "updated" << std::endl;
	else
		std::cout << "not updated" << std::endl;
}

As those couts go to a debug console, I get to know, if updating has succeeded or failed.

But the result is - no text in the edit control and debug window claims that updating succeeded.

I checked with a small application, that normally this should work.

Where should I continue searching for a mistake??

-Janetta

Re: Problems with updating edit control

Daniel Lohmann31-Jul-02 2:50

Daniel Lohmann

31-Jul-02 2:50

Are you calling your AddText function in a lenghtly operation, that is initiated from within the same dialog or another modal dialog of the same thread?

The edit box has no chance to display it's changed content until windows message processing occurs.

--

Daniel Lohmann

http://www.losoft.de

Re: Problems with updating edit control

Janine31-Jul-02 21:34

Janine

31-Jul-02 21:34

Daniel Lohmann wrote:
Are you calling your AddText function in a lenghtly operation, that is initiated from within the same dialog or another modal dialog of the same thread?

I use SDI and CFormView. First I have an OnButton function in the view that calls a function in the Doc. Doc calls another function in another file (written in C) and that calls another function in another file that calls AddText. I hope I answered the question you asked. And I know it doesn't sound like a very good structure...

I guess I could use your CEditLog in here, but this is so small thing that adding a couple of classes because of this seems too much.

Daniel Lohmann wrote:
The edit box has no chance to display it's changed content until windows message processing occurs.

So should I add windows message handlers OnUpdateEdit and OnChangeEdit for my edit control and call those from AddText? And if so, what should I do in those functions?

-Janetta

Re: Problems with updating edit control

Daniel Lohmann31-Jul-02 22:31

Daniel Lohmann

31-Jul-02 22:31

Janetta wrote:
use SDI and CFormView. First I have an OnButton function in the view that calls a function in the Doc. Doc calls another function in another file (written in C) and that calls another function in another file that calls AddText. I hope I answered the question you asked. And I know it doesn't sound like a very good structure...

Yep, this sounds that there is no messange processing during perfoming a lengthy operation. Unless the thead returns from the OnButton function, no message processing occurs.

You have, in prinicple, two possibilities:

Perform the lenghty operation in it's own thread. In this case I recommend using CEditLog, because it is proven to be thread safe.
Add some code to the end of your AddText() function that ensures all outstanding messages are processed. It's quite a long time ago I did this last, but AFAIR the following code should do it (taken with slight modifications from MSDN, do a search for "Idle Loop Processing":
```
MSG msg;
while ( ::PeekMessage( &msg, NULL, 0, 0, PM_NOREMOVE ) )
{
    if ( !AfxGetThread()->PumpMessage( ) )
    {
        ::PostQuitMessage( );
        break;
    }
}
// let MFC do its idle processing
LONG lIdle = 0;
while ( AfxGetApp()->OnIdle(lIdle++ ) )
    ;
// Perform some background processing here
// using another call to OnIdle
```
Note: I was not able to check this code and I am not an expert on this deep MFC stuff, but I assume it would work. Maybe somebody else with more in-depth MFC knowledge could comment on this.

http://www.losoft.de

Re: Problems with updating edit control

Janine1-Aug-02 0:08

Janine

1-Aug-02 0:08

Thanks!

I tried number two and it worked.

-Janetta

MS Visio Style Place and Route (GUI) ?

Koep31-Jul-02 1:25

Koep

31-Jul-02 1:25

Hi all,

i'm looking for code samples or components to create flowchart's.
It should looking like in MS Visio.
I need a WorkSheet and then i want place Shapes and Connections between
these shapes. I want to move these Shapes also.
It's for a Programm Generator Program.

Has anybody links / classes or demo applications for me ?
( I'm a newbie in GDI Programming )

Thanxs !

Marco

How to notify IE of a registry change?!

Tommy Svensson31-Jul-02 1:21

Tommy Svensson

31-Jul-02 1:21

Hi everybody,

I have added a button in Internet Explorer. When I toggle this button, I want to write and load values to and from the IE->Internet Options->Connections->LAN Settings->Advanced dialog.

Q1: Does anyone know how to directly (not going through the registry) change the values in the above mentioned dialog?

Q2: If this is not possible (direct access), then I know how to change the registry settings which IE reads every time it is started. However, being a button in IE, I need the registry settings to reflect immediately to IE without closing (now that would be stupid). This may be inefficient but if it's the only solution then how can I do it? I've been told that it could be done by broadcasting WM_SETTINGCHANGE to all top-level windows. But I don't know the syntax of the wParam or lParam argument it expects. I've tried the reg key that was changed and even tried with nothing at all (SendMessage(HWND_BROADCAST, WM_SETTINGCHANGE, 0, 0)), but still the changes are not visible at runtime in IE.

I have a strict deadline in two days and I really need to fix this!!!

Any help would be greatly appreciated,

/Tommy

How to get disk type information

Kannan Kalyanaraman31-Jul-02 0:59

Kannan Kalyanaraman

31-Jul-02 0:59

On Windows 2000 I need to know whether a particular disk is Basic or Dynamic . Is there a API through which I can get this info' or is it available through WMI(if so what is the WMI class I need to go far).

thanks
Kannan

Re: How to get disk type information

jan larsen31-Jul-02 3:01

jan larsen

31-Jul-02 3:01

I think UINT GetDriveType(LPCTSTR lpRootPathName) should do the trick.
It takes a string to the rootpath and returns an unsigned int containing:

0	         The drive type cannot be determined.
1	         The root directory does not exist.
DRIVE_REMOVABLE	The drive can be removed from the drive.
DRIVE_FIXED	The disk cannot be removed from the drive.
DRIVE_REMOTE	The drive is a remote (network) drive.
DRIVE_CDROM	The drive is a CD-ROM drive.
DRIVE_RAMDISK	The drive is a RAM disk.

"After all it's just text at the end of the day. - Colin Davies

Re: How to get disk type information

Kannan Kalyanaraman31-Jul-02 3:43

Kannan Kalyanaraman

31-Jul-02 3:43

thanks for the info', but I think I need a different type
of information. I think I need to fillin more info.
In Win2K and above OS's you have this option of having dynamic volumes. By default, I think its the Basic volume which can then be converted to dynamic.
You do this by rt clicking My Computer->Manage->Disk Management->Rt. Click on Disk 0 -> Convert to Dynamic Disk. I would like to know whether a Disk is Basic or Dynamic.

thanks again for the reply.

regards
Kannan

CHtmlView inside a Property Page

sridharj31-Jul-02 0:02

sridharj

31-Jul-02 0:02

Hello

I am doing a project where I have to display multiple HTML pages in a tabbed format like in the Opera Web browser. I intend to use the Property Pages for the tabbing and CHtmlView for the display.

Can you tell me how to start off? If you have any alternative to using this combination, that would be fine too.

Regards
Sridhar J

CListCtrl::SetBkImage Error !!

code_cold30-Jul-02 23:50

code_cold

30-Jul-02 23:50

When I use CListCtrl::SetBkImage(..), the function returned FALSE

In my application
In CMyWinApp::InitInstance(..) {...
// I Add
AfxOleinit();
}

void CMyListView::OnInitialUpdate()
{
CListView::OnInitialUpdate();
CListCtrl& ListCtrl = GetListCtrl();

HBITMAP bmp = (HBITMAP) ::LoadImage(AfxGetInstanceHandle(), "F:\\jpeg2\\first\\Bk.bmp",
IMAGE_BITMAP, 0, 0, LR_DEFAULTCOLOR | LR_LOADFROMFILE);
ASSERT(bmp != NULL);

ASSERT(ListCtrl.SetBkImage(bmp)); // Wrong here !!!
....
}

It's me, code_cold

Last Visit: 31-Dec-99 18:00 Last Update: 21-Sep-24 22:51

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