C / C++ / MFC Discussion Boards

First Prev Next

Re: Multiple windows program

Nitron6-Dec-02 10:51

Nitron

6-Dec-02 10:51

If what you want to do is have 2 dialogs from the same app and have them talk to each other, try:

In the main dlg.h

protected:
 CMySecondDlg m_SecondDlg;

then in dlg.cpp:

m_SecondDlg.Create(IDD_MY_DIALOG_RESOURCE, this);

and to show it:

m_SecondDlg.ShowWindow(SW_SHOW);

Then to get access to the main dlg from the new one:

CDlg* pMainDlg = static_cast<CDlg*>(AfxGetMainWnd());

Then you can access main dialog public members like:

pMainDlg->m_MyEditBox.SetWindowText("Boo!");

The second dialog would then be called a Modeless dialog rather than a Modal one.

- Nitron

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

how not to view disassembly while debugging

pnpfriend6-Dec-02 4:15

pnpfriend

6-Dec-02 4:15

How can I not viewing disassembly while I'm debugging my program.. I only want to view variables.. so I went to View menu tab, click on Debug Windows, then I choose Variables. However, when I try to debug, I can view variables changes and Disassemblying at the same time too..

what should I do if I dont' want to view disassembly??

Thanks

Re: how not to view disassembly while debugging

Paul M Watt6-Dec-02 5:55

Paul M Watt

6-Dec-02 5:55

You can open the source file to where you are debugging then step through the source code instead.

However if you do not have the source code then you will be stuck stepping through the disassembly because the IDE needs to have something that you are stepping through when you are watching your variables.

Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!

How to use m_spClientSite

hdi99kf@syd.kth.se6-Dec-02 2:41

hdi99kf@syd.kth.se

6-Dec-02 2:41

Hello.

I have an ActiveX control which I run in Internet Explorer. I want to be able to do some

changes it the html when the control is closed.

I have seen a code example on MSDN:

// Get the document.<br />
CComPtr<IOleContainer> spContainer; <br />
m_spClientSite->GetContainer(&spContainer); <br />
CComQIPtr<IHTMLDocument2, &IID_IHTMLDocument2> spDoc(spContainer); <br />
if (spDoc)<br />
    spDoc->put_bgColor(CComBSTR(_T("pink")));

My problem is I don't know how to obtain the member variable m_spClientSite. Do I have to

implement an interface to use this variable? I tried to include <atlctl.h> but that gave me

a lot of errors.

Any help is greatly appriciated.

Thanks in advance.

/Charlie.

Re: How to use m_spClientSite

geo_m6-Dec-02 5:07

geo_m

6-Dec-02 5:07

the m_spClientSite is I think the member of ATL's class CComControlBase. If you have an ATL component, you have this member for your use.
If you are using some other stuff for generating the control, you have to implement the IOleObject::SetClientSite method, where you can store the supplied parameter (exactly as ATL does this) or look how your library implements the SetClientSite method, where the result is stored etc.

Re: How to use m_spClientSite

charlie26-Dec-02 7:01

charlie2

6-Dec-02 7:01

Thank's for the answer.

I have created the control with the MFC ActiveX ControlWizard.

I really have no idea on how to implement the IOleObject, I have tried to find out how to to on MSDN but I can't find anything good... So if you could give me a hint on how to implement the interface I would be very greatful.

/Charlie.

Re: How to use m_spClientSite

geo_m6-Dec-02 8:35

geo_m

6-Dec-02 8:35

Ah, with MFC I can't help you too much. But I believe that COleControl::GetClientSite() can help you. But this is only blind shooting from the help. This function returns the IOleClientSite pointer, so you will have the same result as having the m_spClientSite pointer. Wink | ;)

MFC and ActiveX problems

amek6-Dec-02 2:07

amek

6-Dec-02 2:07

I have insert ActiveX control into my dialog based application, and when i compile that dialog i just see the name of a control in place where control should be. That control is registered. Where is a problem?

6.12.2002 Adam Pietrzyk
Poland

Re: MFC and ActiveX problems

Nitron6-Dec-02 10:13

Nitron

6-Dec-02 10:13

What ActiveX component? MS, 3rd Party, or proprietary? I use some 3rd party ActiveX stuff pretty regularly, so if you give me some details, perhaps I can help...

- Nitron

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

MFC doc/view with non-file-based documents

Taka Muraoka6-Dec-02 1:52

Taka Muraoka

6-Dec-02 1:52

I've got a doc/view app where my document contains data *not* stored in a file. How do I create a new document/view pair without passing in a filename to CWinApp::OpenDocumentFile()?

I need to attach my in-memory data to the document early on enough in the process for the view to be able to retrieve it in OnInitialUpdate(). Right now I store a pointer to the in-memory data in a global before calling OpenDocumentFile() and the document class constructor picks it up from there but obviously this is not real pretty Smile | :)

he he he. I like it in the kitchen! - Marc Clifton (on being flamed)

Awasu v0.4a[^]: A free RSS reader with support for Code Project.

Re: MFC doc/view with non-file-based documents

Prem Kumar6-Dec-02 4:31

Prem Kumar

6-Dec-02 4:31

Just process on new document and populate the data in the
document. As for the file name just forget it, only
visible trace that it is still being used it in the
main frame, you can remove it by removing the bit
FW_ADDTOTITLE in the mainframe's OnCreate.

Re: MFC doc/view with non-file-based documents

Taka Muraoka6-Dec-02 4:45

Taka Muraoka

6-Dec-02 4:45

Thanks for the reply. But...

1) Since OpenDocumentFile() only takes a LPCTSTR (the filename), I guess I was asking what is the correct way to pass a pointer to my in-memory data so that the document object gets it when it is eventually created.

2) FWS_ADDTOTITLE only controls whether the MDI child window's title gets included in the main window's title. Clearing it in my document frame class stops the "filename" from appearing in the MDI child windows but MFC uses my application name instead! I haven't yet figured out a way to put *my* title in there.

he he he. I like it in the kitchen! - Marc Clifton (on being flamed)

Awasu v0.4a[^]: A free RSS reader with support for Code Project.

Re: MFC doc/view with non-file-based documents

Roger Allen6-Dec-02 5:30

Roger Allen

6-Dec-02 5:30

If you have a pointer the document template class you can do something like:

// create an empty document/view
CMyDocument *pDoc = (CMyDocument*)pDocTemplate->OpenDocumentFile(NULL);

// make it use my non file data
pDoc->UseThisData(pYourData);
pDoc->UpdateAllViews();

Roger Allen
Sonork 100.10016

In case you're worried about what's going to become of the younger generation, it's going to grow up and start worrying about the younger generation. - Roger Allen, but not me!

Re: MFC doc/view with non-file-based documents

Taka Muraoka6-Dec-02 11:20

Taka Muraoka

6-Dec-02 11:20

Tried that. I was hoping to be able to use CWinApp::OpenDocumentFile() since it takes care of the case where the document is already open. Doesn't like a NULL or empty filename, though. I jst thought there might be a Better Way. Oh well Frown | :-(

Thanks

he he he. I like it in the kitchen! - Marc Clifton (on being flamed)

Awasu v0.4a[^]: A free RSS reader with support for Code Project.

MsgWaitForMultipleObjects()

Hugo Hallman6-Dec-02 1:08

Hugo Hallman

6-Dec-02 1:08

I have a worker thread. And I've found an interesting problem, which looks like a windows bug. (!!)
When done polling the message que, and Waiting() for events or more mesasges, the MsgWait seems to ignore that there are already messages in the que, thus locking the application if there happens to be a message in the que when waiting.

Now to the interesting:
When pausing the locked application in VisualStudio. And immediately resuming it. The MsgWait returns (!!!!!) and messages are pooled as expected!

I'm using w2ksp3.

What should I do? Having a WM_TIMER every second, and ignoring the messages isn't good enough.

Re: MsgWaitForMultipleObjects()

geo_m6-Dec-02 2:50

geo_m

6-Dec-02 2:50

Did your queue signal the event correctly?

How to set DC Clipping Region??

work_to_live6-Dec-02 0:44

work_to_live

6-Dec-02 0:44

I'm creating a dialog with a section of it used for drawing graphs. Following the design presented in the Fire sample supplied with VC++ 6.0, I inserted a Static control in the dialog, and attached it to my own "ZPlane" drawing object derived from CStatic.

Everything worked as expected until I drew a circle that went outside the dimensions of the Static control. For some reason, I can draw outside the the control as layed out in the dialog. I thought the DC constructed with the this pointer would return an object with "clipping" set to the size of the CStatic object inside the dialog, but it seems to have been constructed with a clipping region of the parent dialog box.

It's 3:30am, I'm tired, and will work on it some more tomorrow, but if you can point me in the right direction, I'd appreciate it. The question is, how do you set up the clipping region of the DC? I've tried a few of the DC set clip region commands, but to no avail.

If I call GetClientRect from my CStatic derived drawing object, I get the correct size of the Static control, and if I draw a rectangle based on that Rect, it's the size of the Static control. I'd like to specify the clipping region of the DC (I'm assuming you can do this) to the size of the Rect obtained with the GetClientRect.

Thanks.

Re: How to set DC Clipping Region??

work_to_live6-Dec-02 1:06

work_to_live

6-Dec-02 1:06

I gave it one more shot...

Turns out the documentation for
CRgn::CreateRectRgnIndirect( LPCRECT lpRect );

specifies lpRect as containing the logical coordinates of the clipping rect. I found another example of drawing within a clipped area, and it used the device coordinates! I switched to device coordinates, and everything is working as expected.

Is there a problem with the docs???

Now I'm really going to bed!

Re: How to set DC Clipping Region??

Paul M Watt6-Dec-02 6:06

Paul M Watt

6-Dec-02 6:06

ClientRect coordinates are always rooted at (0,0) and extend the width and the height of your window.

If your DC is being constructed for the entire dialog, and not just the static control that you have created, then if your static control is not rooted at (,0) then GetClientRect will not work for you.

You could try using ::GetWindowRect()< instead. It will contain the coordinates of your static control relative to the window that created the DC.

Good Luck

Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!

How can I hide the "Printing" dialog that comes up when a report is sent off to

valos6-Dec-02 0:38

valos

6-Dec-02 0:38

Hello,

I have created a MFC application (doc/view architecture) that is running in background (is not visible) and I print some reports from that application.

The problem is that the "Printing" dialog that comes up when a report is sent off to a printer is visible during the printing process.

How can I hide it?

Many thanks,
Vasile

Re: How can I hide the "Printing" dialog that comes up when a report is sent off to

Prem Kumar6-Dec-02 1:43

Prem Kumar

6-Dec-02 1:43

You can probably, write your own pagination and printing
or track down the point at which dialog is being shown
in the mfc code and then override the function in your
own class and copy from the original function
and remove the dialog calling code.

Resizing in windows 98...

Neha6-Dec-02 0:34

Neha

6-Dec-02 0:34

Hi,
I have a custom ui application. If i keep on resizing the window in windows 98 it says resource not found.It is fine in xp ,2k.There is no resource leak are been reported from bouncechecker application.

What is wrong?
Regards
Neha

Re: Resizing in windows 98...

Paul M Watt6-Dec-02 6:17

Paul M Watt

6-Dec-02 6:17

Are you using a function like transparentBlt? I know there is a resource leak in this function with windows 98.

Otherwise what other types of GDI functions are you using?

Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!

Re: Resizing in windows 98...

Neha6-Dec-02 16:42

Neha

6-Dec-02 16:42

No,i won't use TransparentBlt. I know there is resource leak in that function.so i had used bitblt with SRCOR,SRCAND etc...
Other types are loadimage(),creatergnindirect(),createsolidbrush()..I am deleting all the objects created.
It is fine in 2k & XP.

I don't know what is wrong?

Thanks
Neha

Re: Resizing in windows 98...

Neha6-Dec-02 18:31

Neha

6-Dec-02 18:31

I found that it is failing in CreateCompatibleDC().
Any idea?

Thanks
Neha

Last Visit: 31-Dec-99 18:00 Last Update: 2-Jun-24 9:51

Refresh

ᐊ Prev 1...15726 15727 15728 157291573015731 15732 15733 15734 15735 Next ᐅ

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