C / C++ / MFC

SendInput() compiler report "undeclared identifier"

19-Aug-02 2:55

You could try with GetParentFrame()->SetWindowText(...), but your title will be changed by MFC. To get this right, you need to override the following CMDIChildWnd method:

void OnUpdateFrameTitle(BOOL bAddToTitle);

In your implementation, call 'GetMDIFrame()->OnUpdateFrameTitle(bAddToTitle);' first, then set the caption with a call to AfxSetWindowText (reduces flicker).

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

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

Re: add title

wong190719-Aug-02 4:15

wong1907

19-Aug-02 4:15

Sorry, I am not very understand, could you mind further explain on it? Thx Big Grin | :-D

mmlxl18-Aug-02 20:36

mmlxl

18-Aug-02 20:36

I have include "winuser.h",why compiler report error"undeclared identifier"?
my operation system is Win98 and use vc6.0.

Hi

Re: SendInput() compiler report "undeclared identifier"

Tomasz Sowinski18-Aug-02 22:23

Re: SendInput() compiler report "undeclared identifier"

18-Aug-02 22:23

SendInput is located between the following preprocessor directives:

#if (_WIN32_WINNT > 0x0400)
...
#endif

Define _WIN32_WINNT with value greater than 0x0400 before including winuser.h and you'll be OK.

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

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

mmlxl19-Aug-02 14:53

mmlxl

19-Aug-02 14:53

Thank you for your reply.
I write the code according to you:
...
#define _WIN32_WINNT 0x0500
#include "winuser.h"
...
but it report the same error "undeclared identifier".
is there other reason?
Thanks again!

Hi

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).

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

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 | :)

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.

Tomasz Sowinski19-Aug-02 2:57

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.

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.

Tomasz Sowinski19-Aug-02 21:44

Two questions about CToolTipCtrl

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.

Eugene Pustovoyt18-Aug-02 20:03

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

Tomasz Sowinski18-Aug-02 22:24

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.

Eugene Pustovoyt19-Aug-02 0:37

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

Tomasz Sowinski19-Aug-02 0:42

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.

Eugene Pustovoyt19-Aug-02 2:34

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

Tomasz Sowinski19-Aug-02 2:42

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.

Eugene Pustovoyt19-Aug-02 4:12

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

Eugene Pustovoyt19-Aug-02 9:05

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

Tomasz Sowinski19-Aug-02 0:46

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.

Eugene Pustovoyt19-Aug-02 4:15