C / C++ / MFC

Resizeing View programatically...

16-Jan-01 16:22

You can't because your class is not part of MFC per se.

The way to do it is exactly as you did. ClassWizard does not only work on MFC, but all classes. Of course it therefore knows what you changed the derived class to.

Christian

The content of this post is not necessarily the opinion of my yadda yadda yadda.

To understand recursion, we must first understand recursion.

16-Jan-01 8:45

The following line will force to not have the default opened initial view on app statrtup, and it is OK.

<br />
cmdInfo.m_nShellCommand = CCommandLineInfo::FileNothing;<br />

But I need to size the view according to selection from the user from a dialog as follows:

BOOL CSizeView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	CSizeDlg sizedlg;
	
	int result = sizedlg.DoModal();
	
	if(result == IDOK){

	cs.cx &= sizedlg.m_Height;
	cs.cy &= sizedlg.m_Width;
		
	MoveWindow(0, 0, cs.cy, cs.cx);
		

	}

	return CView::PreCreateWindow(cs);

}

But the above does not work! Frown | :(

How can I fix it! Helps are apprecaietd! Big Grin | :-D

Christian Graus16-Jan-01 9:12

16-Jan-01 9:12

IT CAN'T work, because you're sizing the window in PRECreateWindow, BEFORE it is created. Go to OnInitialUpdate and size it there. For a dialog it would be OnInitDialog.

Christian

The content of this post is not necessarily the opinion of my yadda yadda yadda.

To understand recursion, we must first understand recursion.

16-Jan-01 10:44

Dear Christian,

Thanks alot for reply! Smile | :)

The following is still a problem:

void CSizeView::OnInitialUpdate() 
{
	CView::OnInitialUpdate();
	
	CREATESTRUCT cs;

	CSizeDlg sizedlg;
	
	int result = sizedlg.DoModal();
	
	if(result == IDOK){

	cs.cx = sizedlg.m_Height;
	cs.cy = sizedlg.m_Width;
		
	MoveWindow(0, 0, cs.cy, cs.cx);
	
	}
	
}

the desired sizes using the radio buttons are: 768x1024, 200x320, 480x640 & 600x800 or a custom option, which exist on the dialog and can be selected by the user when selected the new document from menu!

Another problem is when the view is resized, it again gets back to the default size as normal startup!

Thankx again! Big Grin | :-D

Christian Graus16-Jan-01 11:37

16-Jan-01 11:37

Do you mean it resizes and then resizes again, or does not remember it's size ?

I admit I typed this response without trying it, I've just found you need also to do this:

GetParent()->MoveWindow(0,0,x,y);

at least in my program, which shows a bitmap to be edited in the view.

I'd suggest this:

CView::OnInitialUpdate();

CSizeDlg sizedlg;

if(sizedlg.DoModal() == IDOK)
{
MoveWindow(0, 0, sizedlg.m_Width, sizedlg.m_Height);
GetParent()->MoveWindow(0, 0, sizedlg.m_Width, sizedlg.m_Height);
}

I see no point in the extra variables you were creating, and you also had the width and height going in the wrong spots.

Christian

The content of this post is not necessarily the opinion of my yadda yadda yadda.

To understand recursion, we must first understand recursion.

16-Jan-01 12:09

EXCELLENT! Thank you so much! Big Grin | :-D

One more thing:

at least in my program, which shows a bitmap to be edited in the view.

As long as we are in the same pot, how about restricting the drwaing area to the same size. I mean even if the user maximizes the view, it still must remain the same drawing area as the desired size, but now it just maximizes it fully (resisez the area as well as the view!)?

Christian Graus16-Jan-01 18:21

16-Jan-01 18:21

Do you mean resizing the bitmap as well ?

Christian

The content of this post is not necessarily the opinion of my yadda yadda yadda.

To understand recursion, we must first understand recursion.

CPropertyPage in Wizard Mode does not call OnKillActive()

16-Jan-01 23:37

no! just the view. To explain further, please visualize this scenario:

The user opens a new document from menu->new, the size dialog pops up, user selects a 320x200 pxls view and then PASTEs a captured image data of some window by either the print screen key or a CTRL+C keys from any other graphic app.

At this point, when the user PASTEs the image into my apps view as above mentioned with size 320x200, the image could be bigger than the rect area of my view! So I'd have to resize to fit the image! Right!

Suppose the image will be of size 380x380 pxls, then I would resize to fit it, but I do not want the remaining of the view (the white area) to show while the view is fully maximized, as well not to effect the size of the bitmap at all!

Something like whta the "MGI PhotoSuite SE" app does already!

Thankx again Christian! Smile | :)

16-Jan-01 5:30

I have a base class which I have derived from CPropertyPage, called CXXXPropertyPage. This class overides OnKillActive() in order to call a Validate() method in the derived class (pure virtual in CXXXPropertyPage().)

If I have multiple CXXXPropertyPages in a CPropertySheet, all is well and Validate() is called for all property pages in the sheet via the CXXXPropertyPages base class.

The problem occurs if I only have one CXXXPropertyPage in the CPropertySheet. In this case, we want to SetWizardMode() in the CPropertySheet in order to remove the tab from the top right of the property page dialog. If we do this, then OnKillActive() is no longer called in the CXXXPropertyPage base class. I have tried to hook in at other levels, but with no luck - WM_NOTIFY does not work, nor does anything else I have tried.

Surely a wizard has some hook to allow validation before changing page or calling OnOK. I have also tried OnWizardNext(), OnWizardBack() and OnWizardFinnish().

Can you help me, please!

Regards

Tom

Re: CPropertyPage in Wizard Mode does not call OnKillActive()

16-Jan-01 18:02

The 'OnWizard...' functions should be what you are looking for. When Wizard mode is active, these are the functions called for validation. You return FALSE to tell MFC to ignore the request. That is, if the user clicks on the 'Finish' button then 'OnWizardFinish' is called, and you would return 'FALSE' if you did not want the dialog to close.

What exactly happens? Which button do you click ? Which of the the 'OnWizard...' functions is being called (or not called)?

Ian Kilmister

Re: CPropertyPage in Wizard Mode does not call OnKillActive()

16-Jan-01 22:20

Thanks Ian,

I had tried all three OnWizard... functions. But I must have done something wrong. I tried OnWizardFinish again and it miraculously worked straight away!

Thanks again.

Tom Big Grin | :-D

Menu handle

subir talukder16-Jan-01 4:13

subir talukder

16-Jan-01 4:13

hi is it possible to get the handle to a submenu using the id of the menu item in the menu bar
thanks

subir

Re: Menu handle

Michael Dunn16-Jan-01 8:35

Michael Dunn

16-Jan-01 8:35

Popup menus don't have IDs, so you have to access them by their position.

HMENU hmenu = GetMenu(hwnd);
HMENU hFileMenu = GetSubMenu(hmenu, 0); // file menu is position 0
HMENU hEditMenu = GetSubMenu(hmenu, 1); // edit is 1, etc...

--Mike--
http://home.inreach.com/mdunn/
Is history an illusion caused by the passage of time, or is time an illusion caused by the passage of history?

Remove caption from toolbar

Christian Graus15-Jan-01 12:42

15-Jan-01 12:42

I have my own class derived from CToolbar, and I want it to look like it's docked ( no caption bar, gripper on the left ) when it is floating. Can anyone suggest how I might achieve this ?

Thanks

Christian

The content of this post is not necessarily the opinion of my yadda yadda yadda.

To understand recursion, we must first understand recursion.

Remove caption from toolbar

17-Jan-01 23:09

I have my own class derived from CToolbar

Haven't tried it before! One idea would come to mind is what if you override the non client stuff, the WM_NC***** CWnd virtuals! and make your own codings!? Smile | :)

Christian Graus15-Jan-01 12:42

15-Jan-01 12:42

Masoud Samimi21-Jan-01 12:05

Masoud Samimi

21-Jan-01 12:05

Hello Christian,

How are you! Smile | :)

I had this same thing in mind and I last tried it 2 weeks ago by overriding the default NC messages, but it seems it won't work! It actually works but the defualt stuff comes back! Frown | :(

I tried to programicly float the toolbar and it works inbetween here! it draws the whole window+caption with my gradient filling colors!

Also tried to get the menu to delete the Close & Move items, assertions occur (violations in the DeleteMenu(xxx) stuff!).

I wonder/interested if you tried and had any good result with this! Wink | ;)

"Socrates is a man. All men are mortal.
Therefore Socrates is mortal."

-- Aristotle (syllogism)

Cheers
Masoud Samimi Go!

Christian Graus21-Jan-01 12:16

21-Jan-01 12:16

No, I'm still in a hell of my own making. I wouldn't mind a look at your code - my email is cgraus@isw.net.au if you feel inclined. I have got the move/close items to go before, but to be honest, I've not had time to look at it for ages, I was just thinking about it again last night. Maybe if no-one else knows how to do it we could collaborate and produce an article on the subject ?

Christian

The content of this post is not necessarily the opinion of my yadda yadda yadda.

To understand recursion, we must first understand recursion.