C / C++ / MFC Discussion Boards

Re: SendInput() compiler report "undeclared identifier"

Tomasz Sowinski19-Aug-02 21:46

19-Aug-02 21:46

Place the #define in stdafx.h, before any #includes.

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

"Yields falsehood when preceded by its quotation" yields falsehood when preceded by its quotation.

Button inside a listbox?

Moak18-Aug-02 20:24

Moak

18-Aug-02 20:24

Hi GUI coders,
I try to create a ownerdraw listbox which has a fixed button in the upper right corner. Fixed button means here, it always is at the same local position (drawn over listbox entries). Basically, it should look like this (o = button).

_______________
|            o ||
|              ||
|              ||
|              ||
|              ||
|______________||

I already have an ownerdraw CListbox class and an ownedraw CButton class (MFC). Now, how would I integrate my ownerdraw button? Can I use my existing button class (1. somehow one button dynamically created over the listbox)... or do I need to handle everything on my own (2. somehow inside my listbox class)??? At the end I'd like to have a new control. Thanks for any hint or ideas. Currently I have no idea how to start.

Thanks, Moak Smile | :)

PS: What's the idea of this control? When a user hits the new button I'll create a popupmenu showing some icons and the user can choose one. The icon will then be shown in the listbox (it's a output of a chat program).

Re: Button inside a listbox?

Jon Hulatt18-Aug-02 23:10

Jon Hulatt

18-Aug-02 23:10

This is easy. I'm assuming your app is dialog based, or CFormView based.

1. Create a class derived from CListBox ... eg CMyListBox. Does not need to be owner draw for this.

2. Add a member variable to CMyListBox "CButton *m_pButton"

3. Add an implmentation of CMyListBox::PreSubclassWindow :-

void CMyListBox::PreSubclassWindow() 
{
	// TODO: Add your specialized code here and/or call the base class
	
	CListBox::PreSubclassWindow();

	m_pButton = new CButton;
	m_pButton->Create(":o)",WS_CHILD | WS_VISIBLE,CRect(0,0,20,20),(CWnd *) this, 1);	
	
}

4. Use Classwizard to map your dialogs List box control to an instance of CMyListBox.

5. Bob's your uncle.

Jon

STL is a religeon. Enquiries to Reverend Christian Graus

Re: Button inside a listbox?

Moak18-Aug-02 23:22

Moak

18-Aug-02 23:22

wow. sounds easy, lucky luck joy joy Big Grin | :-D

thanks Jon!

PS: who is Bob? Smile | :)

Re: Button inside a listbox?

Roger Allen19-Aug-02 2:47

Roger Allen

19-Aug-02 2:47

Can I just ask why your using new to allocate the object? Just declare it as CButton m_Button, call create as normal, and you have reduced the risk of a memory leak. Its also faster.

BTW, you also need to call DestroyWindow() on the button in the OnDestroy of the ListBox override class.

Roger Allen
Sonork 100.10016

I think I need a new quote, I am on the prowl, so look out for a soft cute furry looking animal, which is really a Hippo in disguise. Its probably me.

Re: Button inside a listbox?

Tomasz Sowinski19-Aug-02 2:57

Tomasz Sowinski

19-Aug-02 2:57

Roger Allen wrote:
BTW, you also need to call DestroyWindow() on the button in the OnDestroy of the ListBox override class

Really? AFAIR, child windows are destroyed with parent.

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

"Yields falsehood when preceded by its quotation" yields falsehood when preceded by its quotation.

Re: Button inside a listbox?

Anonymous_Unregistered19-Aug-02 19:43

Anonymous_Unregistered

19-Aug-02 19:43

yes an answer would be interesting. perhaps I'll do some message tracing and see it the buuton receives a WM_DESTROY or not.

Re: Button inside a listbox?

Tomasz Sowinski19-Aug-02 21:44

Tomasz Sowinski

19-Aug-02 21:44

You can do some tracing, but I can tell you right now that child window will be destroyed correctly - will receive WM_DESTROY and WM_NCDESTROY.

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

"Yields falsehood when preceded by its quotation" yields falsehood when preceded by its quotation.

Two questions about CToolTipCtrl

Eugene Pustovoyt18-Aug-02 20:03

Eugene Pustovoyt

18-Aug-02 20:03

1. How to create the balloon tooltip?
2. Why I can't change the size of the tooltip font on WinXP (on Win98SE - OK)

CToolTipCtrl m_Tooltip;
CFont font;

font.CreateFont(<code>12</code>, 0, 0, 0, FW_NORMAL, 0, 0, 0, DEFAULT_CHARSET,
                OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS, DEFAULT_QUALITY,
                FIXED_PITCH, "Courier");
m_Tooltip.SetFont(&font);

Best regards,
Eugene Pustovoyt

Re: Two questions about CToolTipCtrl

Tomasz Sowinski18-Aug-02 22:24

Tomasz Sowinski

18-Aug-02 22:24

Regarding (2): 'font' - what kind of variable it is? Local, global, member?

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

Never argue with an idiot, he'll bring you to his level and beat you with experience.

Re: Two questions about CToolTipCtrl

Eugene Pustovoyt19-Aug-02 0:37

Eugene Pustovoyt

19-Aug-02 0:37

Of cause, font is a global member, declared in the header file.

I'm glad to hear you, Tomasz. Thank you for your help with tooltip.

Best regards,
Eugene Pustovoyt

Re: Two questions about CToolTipCtrl

Tomasz Sowinski19-Aug-02 0:42

Tomasz Sowinski

19-Aug-02 0:42

Changing font works for me. The code you've posted caused the tooltip to switch to ugly, monospaced Courier font. Smile | :)

You may check if you don't have both global and local variables with the same name.

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

Never argue with an idiot, he'll bring you to his level and beat you with experience.

Re: Two questions about CToolTipCtrl

Eugene Pustovoyt19-Aug-02 2:34

Eugene Pustovoyt

19-Aug-02 2:34

Yes it turns in ugly Courier, but not this main thing. A problem that at various height of a font on WinXP the font tooltip remains constant though on Win98SE his size varies. Any ideas?!

Best regards,
Eugene Pustovoyt

Re: Two questions about CToolTipCtrl

Tomasz Sowinski19-Aug-02 2:42

Tomasz Sowinski

19-Aug-02 2:42

I'm not sure what do you mean exactly. I've tested this on XP with few different font sizes, and everything works OK - the tooltip font changes.

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

"Yields falsehood when preceded by its quotation" yields falsehood when preceded by its quotation.

Re: Two questions about CToolTipCtrl

Eugene Pustovoyt19-Aug-02 4:12

Eugene Pustovoyt

19-Aug-02 4:12

I have once again rechecked and have noticed, that the font does not vary at the size from 1 up to 16. After 16 size increases.

Best regards,
Eugene Pustovoyt

Re: Two questions about CToolTipCtrl

Eugene Pustovoyt19-Aug-02 9:05

Eugene Pustovoyt

19-Aug-02 9:05

This problem with "Courier" font only. When the font is "Verdana" or other, then size changed is right.

Thank you.

Best regards,
Eugene Pustovoyt

Re: Two questions about CToolTipCtrl

Tomasz Sowinski19-Aug-02 0:46

Tomasz Sowinski

19-Aug-02 0:46

Question (1): you need to use TTS_BALLOON style. If you don't have most recent Platform SDK installed, just add this define somewhere:

#ifndef TTS_BALLOON
#define TTS_BALLOON 64
#endif

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

Never argue with an idiot, he'll bring you to his level and beat you with experience.

Re: Two questions about CToolTipCtrl

Eugene Pustovoyt19-Aug-02 4:15

Eugene Pustovoyt

19-Aug-02 4:15

Perfectly works!!!
But why appearance of the tooltip different if to create the following ways?

m_pToolTip.Create(this, TTS_BALLOON);

and

m_pToolTip.Create(this);
m_pToolTip.ModifyStyle(0, TTS_BALLOON);

Best regards,
Eugene Pustovoyt

Help button and propertysheet 2

Mazdak18-Aug-02 19:59

Mazdak

18-Aug-02 19:59

I have a dialog based application that has some propertysheet.I wanted to hide Help button in it so as Shog9 said I put this statement in OnInitDialog ofmy application:

GetDlgItem(IDHELP)->ShowWindow(SW_HIDE);

But unhandled error happend and it seems that no window with this ID exist.I even put it in OnInitDialog of propertysheets but the same things happend.So how can I hide that help button?

Mazy

"If I go crazy then will you still
Call me Superman
If I’m alive and well, will you be
There holding my hand
I’ll keep you by my side with
My superhuman might
Kryptonite"Kryptonite-3 Doors Down

Re: Help button and propertysheet 2

Roger Allen19-Aug-02 2:42

Roger Allen

19-Aug-02 2:42

This line of code will only work in the OnInitDialog() of your CPropertySheet derived class. If you don't have one of these, you can place it in the OnInitDialog() of the first page that you add to your CPropertySheet.

BOOL CMyPage1::OnInitDialog()
{
CPropertyPage::OnInitDialog();
GetParent()->GetDlgItem(IDHELP)->ShowWindow(SW_HIDE);
// ...
}

Roger Allen
Sonork 100.10016

I think I need a new quote, I am on the prowl, so look out for a soft cute furry looking animal, which is really a Hippo in disguise. Its probably me.

I want to catch Net Event?How to...

ZBUILDER18-Aug-02 16:22

ZBUILDER

18-Aug-02 16:22

Hi,Good morning,
I have a small question .Now I want to catch the net event when the netlink breaks down,how to do......
thanks
Zbuilder
jianshez@bjxj-xjgc.com;)

DREAM FOR BRIGHT FUTURE

Pausing a timer

Le centriste18-Aug-02 14:16

Le centriste

18-Aug-02 14:16

Is it possible to pause a timer created with SetTimer without actually killing it?

Michel

It is a lovely language, but it takes a very long time to say anything in it, because we do not say anything in it, unless it is worth taking a very long time to say, and to listen to.

- TreeBeard

Re: Pausing a timer

Neville Franks18-Aug-02 14:53

Neville Franks

18-Aug-02 14:53

Michel Prévost wrote:
Is it possible to pause a timer created with SetTimer without actually killing it?

I don't think so. You could set a flag which tells the timer function to ignore calls to it temporarilly, however killing and recreating the timer would probably be a better way to handle this.

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

Re: Pausing a timer

Mazdak18-Aug-02 19:47

Mazdak

18-Aug-02 19:47

Maybe you can use Sleep() somewhere in your code.If you use WM_TIMER you can use it to do some pausing.

Mazy

"If I go crazy then will you still
Call me Superman
If I’m alive and well, will you be
There holding my hand
I’ll keep you by my side with
My superhuman might
Kryptonite"Kryptonite-3 Doors Down

Compiler Error!!

anu12118-Aug-02 13:51

anu121

18-Aug-02 13:51

Hi, I am in the process of writing a Microsoft DirectShow filter tolay back vedio from a SGI server. The Directshow environment requires the "_stdcall" calling convention while the SGI requires the "_cdecl" calling convention. How do I resolve this error. One of the errors I get when having the _stdcall convention is
asyncflt.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) public: static class MBMovieLib::Movie * __stdcall MBMovieLib::open(char const *,char const *,class MBMovieLib::StreamSpec *,unsigned long,class MBStreamDefs::NameValuePairs

Any help in resolving this problem will be greatly appriciated as I have been trying different things for about a month now.

Thank you.

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