C / C++ / MFC

Re: back color of radio button :MFC

2-Mar-07 20:43

[No Message]

Hamid_RT3-Mar-07 0:27

Handling of ESCAPE and RETURN

3-Mar-07 0:27

What?

WhiteSky

Vancouver2-Mar-07 20:40

Vancouver

2-Mar-07 20:40

I want to handle the ESCAPE key in certain situation; I try to catch it in PreTranslateMessage with WM_KEYUP.

Pressing ESCAPE leads always to the "cancel" result.

If I have a control named IDCANCEL, the OnClicked handler receives the control, whenever
ESACPE has been pressed, but I can not differentiate between clicking on that control
and the "true ESCAPE".

Is there a way I can separate the "escape" key from the CANCEL button and from "exit" ("X" in the system menu)?

Actually, I need it in a CEdit control.

Re: Handling of ESCAPE and RETURN

prasad_som3-Mar-07 2:48

prasad_som

3-Mar-07 2:48

Refer this[^].
Similarly, use VK_RETURN for enter key.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: Handling of ESCAPE and RETURN

Vancouver3-Mar-07 10:01

Vancouver

3-Mar-07 10:01

Thanks, it works with KEYDOWN

Re: Handling of ESCAPE and RETURN

karle3-Mar-07 7:27

karle

3-Mar-07 7:27

Give the button a different ID and a new handler for this ID, than it should work.

To catch up ESCAPE you need to catch the WM_KEYDOWN Event.
But it is important where the PreTranslateMessage.
Try to catch the WM_KEYDOWN event in your Dialog class.

radio button color

prathuraj2-Mar-07 20:19

2-Mar-07 20:19

how to change the background color of the radio button to be same as window color Confused | :confused:

Re: radio button color

Hamid_RT2-Mar-07 20:27

2-Mar-07 20:27

See

HBRUSH CDialogDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);

pDC->SetTextColor(RGB(20,120,220));//text
pDC->SetBkColor(RGB(20,120,220));//background
	return hbr;
}

WhiteSky

prathuraj2-Mar-07 22:01

2-Mar-07 22:01

how to handle this OnCtlColor class and to set the background color
i think will not work for buttons. it chnages only the static label background.

-- modified at 4:36 Saturday 3rd March, 2007

Hamid_RT3-Mar-07 0:27

3-Mar-07 0:27

You must insert WM_CTLCOLORmessage to your program and for radio button its working Wink | ;)

and again a short help

BEGIN_MESSAGE_MAP(CDialogDlg, CDialog)
ON_WM_CTLCOLOR()
END_MESSAGE_MAP()

HBRUSH CDialogDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);

pDC->SetBkColor(RGB(20,120,220));
pDC->SetTextColor(RGB(255,255,220));

	return hbr;
}

/////////////header file/////////////
public:
afx_msg HBRUSH OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor);

WhiteSky

prathuraj3-Mar-07 18:06

3-Mar-07 18:06

thank you very much its working well.

Hamid_RT4-Mar-07 4:59

Recreate splitter Window uisng VC++ 6.0

4-Mar-07 4:59

You're welcome Wink | ;)

WhiteSky

Sunil Lanke2-Mar-07 19:44

Sunil Lanke

2-Mar-07 19:44

Hi,
I want to switch from 5 window splitter to 3 window, using the same object of CSplitterwnd, is it possible for me to reintialise or recreate the same object of CSplitterwnd, so that i can change the number of rows and columns in the same application.

Re: Recreate splitter Window uisng VC++ 6.0

Monty²2-Mar-07 20:27

Monty²

2-Mar-07 20:27

Are you trying to do this at runtime?

Re: Recreate splitter Window uisng VC++ 6.0

Sunil Lanke5-Mar-07 21:52

Sunil Lanke

5-Mar-07 21:52

Yes, i want to do it Run time when i will click on certain button.

Any way to run an exe at logoff!

ShaluMalu2-Mar-07 19:29

ShaluMalu

2-Mar-07 19:29

Hello everybody!

Is there any specific way to run an exe when a system wants to logoff!
Or will the system forcefully closes all active applications before logoff?

Re: Any way to run an exe at logoff!

Monty²2-Mar-07 20:29

Monty²

2-Mar-07 20:29

You can get a notification to an already running exe but i am not aware of any method to run an exe.

Re: Any way to run an exe at logoff!

prasad_som3-Mar-07 3:16

prasad_som

3-Mar-07 3:16

Systems send WM_QUERYENDSESSION to each application window when log off process is initiated. You can do any specific task here. Returning FALSE in response to this message causes log off operation to stop.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Question related to List box control.

Sameer_Thakur2-Mar-07 19:16

Sameer_Thakur

2-Mar-07 19:16

Hi all.

How can I get the pointer/handle to the horizontal and vertical scroll bars from list box?
I tried it using…

CListBox *pList = (CListBox *) GetDlgItem(IDC_LIST);

if( NULL == pList->GetSafeHwnd() )
return;
CScrollBar* pVertScroll = pList->GetScrollBarCtrl(SB_VERT ) ;
But it is returning NULL.

Also how I can trap the events like WM_MOUSEMOVE over scroll bar arrows?

Thanks

Sameer Thakur

Hamid_RT2-Mar-07 19:59

2-Mar-07 19:59

Sameer_Thakur wrote:
CScrollBar* pVertScroll = pList->GetScrollBarCtrl(SB_VERT ) ;
But it is returning NULL.

Did you see MSDN?
From the MSDN
This member function does not operate on scroll bars created when the WS_HSCROLL or WS_VSCROLL bits are set during the creation of a window

WhiteSky

Sameer_Thakur2-Mar-07 22:22

Sameer_Thakur

2-Mar-07 22:22

Hi.
Yes I saw that point mentioned in MSDN..

Thats why I asked for the method to get handle to the Scroll bars of Listbox.

Is there any way to get it?

Thanks

-- modified at 4:47 Saturday 3rd March, 2007

Sameer Thakur

Hamid_RT3-Mar-07 0:49

3-Mar-07 0:49

Can you say what do you need,excatly?

WhiteSky

Sameer_Thakur3-Mar-07 2:06

Sameer_Thakur

3-Mar-07 2:06

Sure.

In my application I have added a list box on a dialog box. This list contain so many numbers of string elements that user has to scroll too much to see all the contents.

I want to minimize the scrolling efforts of user and I want to provide auto scrolling to the list box. The elements of the list box should get scroll automatically when user movies the mouse pointer over scroll bar arrows of the list box.

For that I want to …
1. Get the pointer or handle to the Scroll bars of list control.
2. Trap the event when mouse is moved over the scroll bar arrows and kept there for some predefined time say 2 sec.
3. Scroll down or up the list with some specified speed.

How I can proceed to achieve these sub tasks?

Thanks

Sameer Thakur

Hamid_RT3-Mar-07 7:04