C / C++ / MFC Discussion Boards

Michael Dunn18-Jan-02 13:13

18-Jan-02 13:13

Explorer bars are COM objects. As for where to start, my Intro to COM article, then tutorials on Explorer bars by me and Erik Thompson.

--Mike--
My really out-of-date homepage
"Hey, you wanna go to the Espresso Pump and get sugared up on mochas?"
-- Willow Rosenberg
Sonork - 100.10414 AcidHelm
Big fan of Alyson Hannigan.

SendMessage(WM_MDIACTIVATE)

18-Jan-02 0:16

Hi,

I am trying to activate a CView derived MDI window from a CControlBar containing an image list of view thumbnails. When I double click on the thumb I want to activate the view, i.e. bring it to the top. I cannot seem to get the SendCommand message right. Can someone help me with this.

::SendMessage(???,WM_MDIACTIVATE,(WPARAM)pTheViewToActivate,0);

Where do I need to send the message to for it to process the MDI activate message? MSDN also seems to be confused about the lparam, is it needed or not?

Many thanks

Matthew

Re: SendMessage(WM_MDIACTIVATE)

Jon Hulatt18-Jan-02 0:32

Jon Hulatt

18-Jan-02 0:32

(WPARAM)pTheViewToActivate looks like you're trying to send a CView pointer as the wParam. You should be sending an hWnd (window handle) instead.

But that's besides the point, because i think that CMDIChildWnd::MDIActivate() does exactly what you want.

jon

Sorry to dissapoint you all with my lack of a witty or poignant signature.

Re: SendMessage(WM_MDIACTIVATE)

Jon Hulatt18-Jan-02 0:33

Jon Hulatt

18-Jan-02 0:33

Ooops, i meant CMDIFrameWnd::MDIActivate()

Sorry to dissapoint you all with my lack of a witty or poignant signature.

Re: SendMessage(WM_MDIACTIVATE)

18-Jan-02 3:19

Thanks for the pointer. It was a little more involved for me due to my requirements but it all resulted in a call to

CMDIChildWnd::MDIActivate

thanks again

Matthew

Ms Word Automation, moving and resizing word window...

Braulio Dez18-Jan-02 0:13

Braulio Dez

18-Jan-02 0:13

Hi,

I´m running MS Word embedded ( I mean like if it where an standalone application), and I want to show the Ms Word window at the left side of a window of my application ( just one view with some buttons to add some tables and that stuff).

I have seen that from the Application object word has two methods, "Move" and "Resize", but the problem that I found is that the coordinates seems not be in Pixels, do you know which coordinate system uses Word for that ?
( and how can I convert from Pixels to word thing coordinates... Wink | ;-)

)

Thanks, Bye !
Braulio

Which Style to avoid resizing of a window

Braulio Dez17-Jan-02 21:22

Braulio Dez

17-Jan-02 21:22

Hi !

Which style ( or which things override) I have to modify to avoid that my window is resized ( I have a frame and sometimes when some reasons occurs I want to keep fixed the size of the frame).

Thanks, Bye !
Braulio

Re: Which Style to avoid resizing of a window

Nish Nishant17-Jan-02 22:00

Nish Nishant

17-Jan-02 22:00

Put this line in CMainFrame::PreCreateWindow

cs.style &= ~WS_THICKFRAME;

Nish

Sonork ID 100.9786 voidmain
www.busterboy.org
If you don't find me on CP, I'll be at Bob's HungOut

Re: Which Style to avoid resizing of a window

Braulio Dez17-Jan-02 22:15

Braulio Dez

17-Jan-02 22:15

Thanks Nish !

One more thing.... I would like that the user could not resize Horizontally but vertically yes, is that possible ?, Thanks !
Braulio

Re: Which Style to avoid resizing of a window

Nish Nishant17-Jan-02 22:47

Nish Nishant

17-Jan-02 22:47

Yes. Override OnSizing. Not OnSize but OnSizing.

Nish

Sonork ID 100.9786 voidmain
www.busterboy.org
If you don't find me on CP, I'll be at Bob's HungOut

One more thing,...

Braulio Dez17-Jan-02 22:12

Braulio Dez

17-Jan-02 22:12

Hi,

I have found out something that works fine and is:

ModifyStyle( WS_THICKFRAME, 0);

But... I would like to allow the user resize vertical but not horiz., how can I do that ?

Thanks, Bye !
Braulio

Re: Which Style to avoid resizing of a window

Kannan Kalyanaraman18-Jan-02 1:41

Kannan Kalyanaraman

18-Jan-02 1:41

You can try doing a hit test for non-client areas of a window and then based on the hit param decide on whether to allow resize or not.

Hope this helps

Cheers
Kannan

Re: Which Style to avoid resizing of a window

Michael Dunn18-Jan-02 13:20

Michael Dunn

18-Jan-02 13:20

To allow resizing in only one direction, handle WM_NCHITTEST and change the return value from the default window procedure if necessary. For example, to allow only horizontal resizing:

UINT CMyWnd::OnNcHitTest ( CPoint pt )
{
UINT uRet = CWnd::OnNcHitTest(pt);
 
  switch ( uRet )
    {
    case HTTOP:  case HTBOTTOM:
      uRet = HTNOWHERE;
    break;
 
    case HTBOTTOMLEFT:  case HTTOPLEFT:
      uRet = HTLEFT;
    break;
 
    case HTBOTTOMRIGHT:  case HTTOPRIGHT:
      uRet = HTRIGHT;
    break;
    }
 
  return uRet;
}

This changes the hit-test result so that when the cursor is in the top/bottom borders, it doesn't change to the resizing arrows.

--Mike--
My really out-of-date homepage
"Hey, you wanna go to the Espresso Pump and get sugared up on mochas?"
-- Willow Rosenberg
Sonork - 100.10414 AcidHelm
Big fan of Alyson Hannigan.

Re: Which Style to avoid resizing of a window

Braulio Dez20-Jan-02 20:55

Braulio Dez

20-Jan-02 20:55

Thanks !!

Seeya !
Braulio

DoEvents Equiv in VC++

Nick Jacobs17-Jan-02 16:59

Nick Jacobs

17-Jan-02 16:59

Ok, it's 11:00pm and I've been slinging code in front of this puter all day. What I can't remember is, what's the equivalent of a DoEvents for VC? What I need to do is to have the display refresh and respond to events while in a loop.

VB uses DoEvents to do this.

Just can't think this late at night.

Anybody wanna bail me out?

Thanks,
Nick

Re: DoEvents Equiv in VC++

Christian Graus17-Jan-02 17:06

Christian Graus

17-Jan-02 17:06

To refresh the screen, call Invalidate(). To respond to events while in a loop you should really have a UI thread and a worker thread. Otherwise the loop will stop the GUI from responding.

Christian

I have come to clean zee pooollll. - Michael Martin Dec 30, 2001

Sonork ID 100.10002:MeanManOzI live in Bob's HungOut now

Re: DoEvents Equiv in VC++

Nish Nishant17-Jan-02 18:24

Nish Nishant

17-Jan-02 18:24

while (GetMessage(&msg, NULL, 0, 0)) 
{
	TranslateMessage(&msg);
	DispatchMessage(&msg);
}

Nish

Sonork ID 100.9786 voidmain
www.busterboy.org
If you don't find me on CP, I'll be at Bob's HungOut

Re: DoEvents Equiv in VC++

Jens Kreiensiek18-Jan-02 0:27

Jens Kreiensiek

18-Jan-02 0:27

the mfc-way:

void DoEvents()
{
	MSG m;
	while(::PeekMessage(&m, 0, 0, 0, PM_NOREMOVE))
		AfxGetApp()->PumpMessage();

	LONG lIdle = 0;
	while(AfxGetApp()->OnIdle(lIdle++ ))
		;  
}

have fun...
jk Cool | :cool:

Direct X

17-Jan-02 16:27

I am in the preliminary stages of creating a media player. But i need some help in getting information on how to handle Direct X in Visual C++. Where to use it, and just general attributes as such. Any help would be greatly appreciated. Cool | :cool:

BH_BAD

Re: Direct X

Jonathon Lockett17-Jan-02 16:47

Jonathon Lockett

17-Jan-02 16:47

I presume you want to use Directsound ? There's an mp3player that uses DS on CP, search for MPEG.

If you use DirectShow, your media player will essentially be your dialog running Media Player as a COM object.

Jonathon

Re: Direct X

Vladimir Georgiev18-Jan-02 2:02

Vladimir Georgiev

18-Jan-02 2:02

You need to download the DirectX SDK from a Microsoft site... A .CHM file goes with it which explains the fundamentals of all DX components (DirectSound and DirectShow will be there too). there are some nice tutorials, too.
So, do it and start reading...

"Needless redundancy is the hobgoblin of software engineering." - Peter Darnell

CFileDialog - how to change background color?

17-Jan-02 14:44

I want to change the background color of the standard CFileDialog to white, but I can't figure out how to do that...
I derived a my own class CMyFileDialog from CFileDialog and tried to handle OnCtlColor() in there but that fuction doesn't get called at all???

Does one of the guru's here know how to change the background color in CFileDialog ?

Thanks a bunch!

Re: CFileDialog - how to change background color?

Rickard Andersson²⁰18-Jan-02 0:46

Rickard Andersson²⁰

18-Jan-02 0:46

If it is possible to do that, try WM_ERASEBKGND instead.

------------------------------
©0d3 ©®4©k3® - That's me! Smile | :)

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Unicode (on Win9x)

17-Jan-02 11:55

Hey all!

I noticed that IE can display text in foreign languages on buttons, in list boxes and as HTML (rich text), even on Win9X platforms (with no special foreign-language installations).

I would like to incorporate similar functionality in my application. I managed to write SOME Unicode text on the Rich Edit control (Hebrew, Arabic, no Chinese though). I didn't manage to display foreign languages in the List View common control (tried using the CCM_SETUNICODEFORMAT message, didn't help), and I have no idea how to write such text on a simple button.

Any ideas?

Thanks!

Re: Unicode (on Win9x)

Jens Kreiensiek18-Jan-02 0:31

Jens Kreiensiek

18-Jan-02 0:31

hi,

make your button ownerdraw and use TextOutW() to draw the text...

have fun...
jk Cool | :cool:

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