C / C++ / MFC Discussion Boards

john john mackey14-Nov-02 10:20

14-Nov-02 10:20

Ok, here is what I have:

A modeless CPropertySheet derived dialog with a CButton that pops up a modal dialog. The modal dialog I use to collect a couple fields of data SPECIFIC to the parent modeless Sheet.

What happens now is when I pop up the modal dialog, the positioning is relative to the Main Frame.

I want the modal dialog to be placed right over the modeless Sheet (dialog).

Also, I can see that my method of placing the modal dialog is relative to the Main Frame because when I move the Main Frame around, the modal dialog is offset +50 from the Main Frame.

Thanks for help (in advance)

Re: GetParent when modeless

Ravi Bhavnani14-Nov-02 8:20

Ravi Bhavnani

14-Nov-02 8:20

Try using SetWindowPos() if MoveWindow() doesn't work. (Cheesy answer, I know).

/ravi

Let's put "civil" back in "civilization"
http://www.ravib.com
ravib@ravib.com

Re: GetParent when modeless

Neville Franks14-Nov-02 9:31

Neville Franks

14-Nov-02 9:31

GetWindowRect() returns screen coordinates and MoveWindow() uses client coordinates for child windows. Try using ScreenToCLient(). Also how do you know GetParent() is returning the MainFrame. Have you verified this somehow.

Neville Franks, Author of ED for Windows. www.getsoft.com

Re: GetParent when modeless

john john mackey14-Nov-02 10:13

john john mackey

14-Nov-02 10:13

The displacement of the window works (one way or the other - sans ScreenToClient()),
However, I see that the coordinates and thus my ParentWnd reference are with respect to the MainFrame.

When I move the main frame (the window with the menu bar and tool bar for my app), the modal window is offset the same amount with respect to the main frame's window. This is the case every time I popup the modal window from my modeless property sheet.

Any ideas???

Re: GetParent when modeless

Neville Franks14-Nov-02 10:20

Neville Franks

14-Nov-02 10:20

Does the code the creates the modal popup dialog specify the modeless dialog as its parent? Also if you look at the Window info for the Modal dialog in Spy++ or WinSpector is it correct?

Neville Franks, Author of ED for Windows. www.getsoft.com

Re: GetParent when modeless

john john mackey14-Nov-02 10:48

john john mackey

14-Nov-02 10:48

I don't do it explicitly. The modeless property sheet (or the property page on the sheet) calls DoModal().

So it happens like this:

void CPage2Dlg::OnButton()
{
CPopUpDlg dlg;

dlg.DoModal(); // position WRT the modeless parent

}

Using Spy++, I get some wacked results -- in the OnInitDialog() of the modal dialog, GetParent() returned and address different that what I found using Spy++ for:
(Main Frame) - 0x002204EC
Prop Sheet - 0x000D0534
modal dialog itself - 0x00030DC0
GetParent() -- 0x00355290

Oh the agony!!!!

Re: GetParent when modeless

Ernesto Perales Soto14-Nov-02 11:07

Ernesto Perales Soto

14-Nov-02 11:07

<br />
void CPage2Dlg::OnButton()<br />
{<br />
CPopUpDlg dlg(WHATEVER_TEMPLATE_ID_YOU_ARE_USING,this);<br />
<br />
dlg.DoModal(); // position WRT the modeless parent<br />
<br />
}

afaik, it should work

eperales

Re: GetParent when modeless

Neville Franks14-Nov-02 11:08

Neville Franks

14-Nov-02 11:08

Well I think you are getting a bit closer. Track down what window 0x00355290
is on Spy++. You either need to set the Modal dialog up so GetParent() returns the right thing, or find another way to get the Modeless dlg hWnd.

Neville Franks, Author of ED for Windows. www.getsoft.com

Re: GetParent when modeless

Ravi Bhavnani14-Nov-02 11:28

Ravi Bhavnani

14-Nov-02 11:28

Save the property sheet's pointer in the property page, and pass it to CPopUpDlg in OnButton(). That will guarantee that you have the right origin window.

/ravi

Let's put "civil" back in "civilization"
http://www.ravib.com
ravib@ravib.com

Making an ActiveX from MFC exe project !

Hadi Rezaee14-Nov-02 6:27

Hadi Rezaee

14-Nov-02 6:27

Hello there,

I wrote a MFC exe project, How can i make an ActiveX of it ?

Regards,

My month article: Game programming by DirectX by Lan Mader.
Please visit in: www.geocities.com/hadi_rezaie/index.html

Hadi Rezaie

CWebBrowser2 Control and invalid URL

olivier14-Nov-02 6:11

olivier

14-Nov-02 6:11

Is there a way with the CWebBrowser2 Control to know if URL that i want to display is invalid (wrong URL, File does not exist, Connection Problem ....) ?
Thanks Poke tongue | ;-P

Olivier

Re: CWebBrowser2 Control and invalid URL

olivier18-Nov-02 1:59

olivier

18-Nov-02 1:59

I have found the solution :

In the event sink map, you have to add

ON_EVENT(CWebBrowser2, ID_WEB_CTRL, DISPID_NAVIGATEERROR, OnNavigateError, VTS_DISPATCH VTS_PVARIANT VTS_PVARIANT VTS_PVARIANT VTS_PBOOL)

and in the code :

<br />
void CWebBrowser2::OnNavigateError (LPDISPATCH lpDisp,VARIANT FAR* URL, VARIANT FAR* TARGET , VARIANT FAR* STATUS, VARIANT_BOOL * CANCEL)<br />
{<br />
	*CANCEL = VARIANT_TRUE;<br />
}<br />

Modeless PropertySheet

john john mackey14-Nov-02 5:41

john john mackey

14-Nov-02 5:41

Hi,

I have created a modeless Property Sheet. I now want to add pages at run time (remove pages then add pages) so that my property sheet has at most 2 pages at one time.

THE PROBLEM IS that I get an error when I try to do this. The debugger replys that a window handle is null (0x00000).

If I create the sheet and add the pages in while in the Sheet's constructor, I don't get an error. But if I try to add a page during run time, I get an error. What is wrong and how can I correct this? Please help.

Here is what I want:
Page 0 (zero) -- page that will be swapped in/out
Page 1 -- page that always appears. Must be the right most page (on tab)

I have my callbacks in CMainFrame class and I have done the modeless Property Sheets before -- when pages are not removed/added dynamically.

Thanks in advance for the help. Code snipet follows
Johnny

void CMainFrame::OnModelessPropSheet()
{
CBasicEventPage pageBasicEvent;
CPageBlue pageBlue;

/********** // 11/12/02 - dynamic add/removal of pages not yet working
int nPageCount;

// Remove both pages (event and the Basic Event Data)
nPageCount = m_pSheetManEvents->GetPageCount();
for (int i=0; i < nPageCount; i++)
m_pSheetManEvents->RemovePage(i);

// Add pages back in (starting with Blue and then Basic Event Data)
m_pSheetManEvents->AddPage(&pageBlue);
m_pSheetManEvents->AddPage(&pageBasicEvent);
m_pSheetManEvents->SetTitle("Insert Blue", 0);
**********/
if (m_pSheetManEvents->IsWindowVisible())
{
m_pSheetManEvents->SetFocus();
}
else
{
m_pSheetManEvents->ShowWindow(SW_SHOW);
}
}

Re: Modeless PropertySheet

valikac14-Nov-02 7:07

valikac

14-Nov-02 7:07

There is one alternative solution. You can setup the sheet to not show a certain page. In other words, you can keep the sheet from diaplaying a page via redirecting the active page as the user tries to focus the hidden page. This solution, however, does not hide the tabs.

As an experiment, see if there is a member function for CPropertySheet that hides a page.

Re: Modeless PropertySheet

john john mackey14-Nov-02 7:32

john john mackey

14-Nov-02 7:32

Thanks. That sounds like a good work around.

I might include all the pages (I will have at most 7) and then hide the 5 that I don't use (including their tab). There should be a method to hide pages with the TAB not displayed. ???

I also found an example on a Property Sheet alternative from Chris Losinger - a Preference dialog (http://www.codeproject.com/property/saprefs.asp) This may come later as time permits.

Thanks for the reply.
Johnny

uppercase question

NickOne14-Nov-02 5:19

NickOne

14-Nov-02 5:19

Hello,

I had a question concerning non-visual C++, but I figured I'd ask you guys anyways because you guys know a lot. I am using the string class in C++ (not a char array), and I want to convert it to an uppercase string. I know that char arrays have a toupper() function where you can turn the array, letter by letter, into uppercase values. If I use c_str() and convert my string into a null terminating string. Is it possible though to acces the values of the string, letter by letter?

Thanks a bunch,

Nickone

Re: uppercase question

Alexandru Savescu14-Nov-02 5:40

Alexandru Savescu

14-Nov-02 5:40

You can use operator [] to access individual characters of the standard std::string.

Best regards,
Alexandru Savescu

P.S. Interested in art? Visit this!

Re: uppercase question

NickOne14-Nov-02 5:46

NickOne

14-Nov-02 5:46

sweet!

Thanks a whole bunch. I was trying to use the data() function, but this way is simpler.

Re: uppercase question

jhwurmbach14-Nov-02 23:05

jhwurmbach

14-Nov-02 23:05

The STL-way of doing this (and here we have a place where STL really shines)would be

std::string s("Mellon");
std::transform(s.begin(), s.end(), s.begin(), toupper);
std::cout << s << std::endl;
std::transform(s.begin(), s.end(), s.begin(), tolower);
std::cout << s << std::endl;

You need to include the algorithms header for transform, but otherwise it is pretty straightforward:
Take each element from s.begin() to s.end(), put them to s.begin() (and so on) after you called toupper/tolower with them.
Hope this helped

Re: uppercase question

Alvaro Mendez15-Nov-02 8:09

Alvaro Mendez

15-Nov-02 8:09

You can also use the strupr function but it's not nearly as elegant as the STL solution offered above:

string strData = "Data";
strupr(const_cast<char*>(strData.c_str()));

Regards,
Alvaro

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

Password Filters

Joe Herbert14-Nov-02 5:16

Joe Herbert

14-Nov-02 5:16

Good morning everyone. Sleepy | :zzz:

I have a question. I wrote a dictionary-based password
filter and have successfully implemented it on my win2000
machine.

However, when I purposely change my password to something
I know will NOT be accepted by the filter, i get this
message ...

<br />
"Your password must be at least 6 characters; cannot <br />
repeat any of yoru previous 3 passwords; must contain <br />
capitals, numerals, or punctuation; and cannot contain <br />
your account or full name.  Please type a different <br />
password.  Type a password which meets these requirements <br />
in both text boxes."

I'm using CTRL-ALT-DEL to change my password. Is there
any way at all to customize this notification popup so
that I can state my own rules of passwords? Thank-you in
advance for you time Smile | :)

I'm new here, pardon the n00bing

How does Windows Media Player utilizu an external MPEG2 decoder?

Redeemer-dk14-Nov-02 4:58

Redeemer-dk

14-Nov-02 4:58

WMP can only play MPEG2 files if you have installed an external software DVD player. Now i ask, how can WMP utilize that driver that the other program installs?

All help appreciated!

-Rune Svendsen

Re: How does Windows Media Player utilizu an external MPEG2 decoder?

benjymous14-Nov-02 5:12

benjymous

14-Nov-02 5:12

It's just a player codec, I think. Works the same as decoders for any other video format (such as divx)

--
Help me! I'm turning into a grapefruit!

Re: How does Windows Media Player utilizu an external MPEG2 decoder?

Redeemer-dk14-Nov-02 5:27

Redeemer-dk

14-Nov-02 5:27

Unfortunately not. I've checked, there's no MPEG2 decoder present as a vcm driver.

Gets the hot spot of the cursor

Eugene Pustovoyt14-Nov-02 4:56

Eugene Pustovoyt

14-Nov-02 4:56

How can I get the hot spot from the cursor?

Best regards,
Eugene Pustovoyt

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.