C / C++ / MFC

9-Nov-07 15:18

I previously posted a simular question and received some interesting response.
I have 7 pages within a Wizard. On each page there are 8 - 10 Editboxes that are NOT set for tab control. There is nothing else on the property page besides the Editboxes.(no [OK], [Start], etc.)
If a User selected with the mouse the 5th Editbox on page 2 (IDC_TIRES), entered some data, then selected the [Next] or [Back] button on ther Wizard, OR selected with the mouse ANOTHER Editbox on page2; I have no idea how to get the data. Using ONSETFOCUS or ONENCHANGE only tells me activity has occured within the Editbox, where ONKILLFOCUS tells me the User is no longer using the Editbox. When ONKILLFOCUS occurs I could get the data IF I had control of the page. How can I get control of the page is my question. snippet code please!

-- modified at 21:32 Friday 9th November, 2007
I did in the "Class Wizard" under CPage_2 class, select each IDC_ ???? box and added a function for it. So Editbox 5 is IDC_TIRE and the function name for it is CPage_2::OnTire() .
I thought I would gain control this way but it didn't give me control.

A C++ programming language novice, but striving to learn

David Crow9-Nov-07 16:42

9-Nov-07 16:42

Larry Mills Sr wrote:
...I have no idea how to get the data.

Assuming you have a CEdit member variable assigned to each edit control, just use the GetWindowText() method.

Larry Mills Sr wrote:
I did in the "Class Wizard" under CPage_2 class, select each IDC_ ???? box and added a function for it. So Editbox 5 is IDC_TIRE and the function name for it is CPage_2::OnTire() .
I thought I would gain control this way but it didn't give me control.

But what message is OnTire() associated with?

"Normal is getting dressed in clothes that you buy for work and driving through traffic in a car that you are still paying for, in order to get to the job you need to pay for the clothes and the car and the house you leave vacant all day so you can afford to live in it." - Ellen Goodman

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Larry Mills Sr10-Nov-07 13:10

10-Nov-07 13:10

I guess I'm not very good at explaining what I need. Picture yourself as the User. You see an Editbox for Tires with the instruction to enter the SN# or Part#. You enter it and then either select another Editbox on this page(2) or click [next] and go to the next page (which the page knows nothing about). Where and when in the class (CPage_2), if such an activity occurs, am I to do the pRdit->GetWindowText().

A C++ programming language novice, but striving to learn

David Crow10-Nov-07 15:30

10-Nov-07 15:30

Larry Mills Sr wrote:
Where and when in the class (CPage_2), if such an activity occurs, am I to do the pRdit->GetWindowText().

When you switch from page #2 to any other page, page #2 will receive a PSN_KILLACTIVE notification.

Larry Mills Sr11-Nov-07 2:59

11-Nov-07 2:59

Okay, What about if thye User selects another Editbox on page 2?; or has to look up the part number and takes an excessive amount of time finishing part number/ID entry. How will I know to capture the data? Code please.

A C++ programming language novice, but striving to learn

David Crow11-Nov-07 14:19

11-Nov-07 14:19

Larry Mills Sr wrote:
What about if thye User selects another Editbox on page 2?;

Look for EN_SETFOCUS and EN_KILLFOCUS.

Larry Mills Sr12-Nov-07 2:26

12-Nov-07 2:26

David,
When the "Class Wizard" creates a class for the Property Page is creates the constructor, and several other functions for the class. If I select ON_EN_SETFOCUS, ON_EN_CHANGE, ON_EN_KILLFOCUS, the Wizard gladly creates these functions - all have "return"s as the last statement. Again, neither of these functions would give me control of the page. Once the User has selected(clicked on) the editbox a ON_EN_SETFOCUS message is sent to the page, the same once the User selects another editbox on the page a ON_EN_KILLFOCUS message and another ON_EN_SETFOCUS message is sent ALL WITH RETURNS. I at no point receive control of the page on either selection. I need to be able to know (1): that the User is using a editbox (ON_EN_SETFOCUS does that), (2) That the User has finished entering the data (ON_EN_KILLFOCUS does that - IF ANOTHER editbox is selected). but I don't kn ow how to capture those messages and use them to collect the data. Can you show me with code as to how I would get the data? I'm sorry, but I just cannot fiquire out how to use the messages to transfer the messages into a function of my own to capture the data. Please explain with code examples.

A C++ programming language novice, but striving to learn

David Crow12-Nov-07 2:47

12-Nov-07 2:47

Larry Mills Sr wrote:
Again, neither of these functions would give me control of the page.

I have no idea what this means.

Larry Mills Sr12-Nov-07 5:23

12-Nov-07 5:23

What I'm trying to say (and don't know how) is I don't know how to get the data, if nany, once the User is finished. There is no [Finished] or [OK] button or any other type of button on the page. Just the 8-10 editboxes. I know I can know when a User has clicked on a editbox(ON_EN_SETFOCUS), and I know I will know when the User clicks on something else (ON_EN_KILLFOCUS); but how do I trap(capture) these messages and have the page jump to a function of my creation, ie.:"CPage2::GetDataFromEditBox()". I'm no understanding the "return" statements of ON_EN_SETFOCUS" and ON_EN_KILLFOCUS. I can't, anywhere on the page say, "If ON_EN_SETFOCUS == TRUE then go here; because I don't have a method in place to be able to say that. In other words, the page is running without control until such a time as I can get the page to go to a function of my creation? Understand? Afterall, on a page there can be no "OnCommand" function to release control to a function.

A C++ programming language novice, but striving to learn

David Crow12-Nov-07 5:30

12-Nov-07 5:30

Larry Mills Sr wrote:
...but how do I trap(capture) these messages and have the page jump to a function of my creation, ie.:"CPage2::GetDataFromEditBox()".

Use ClassWizard (Ctrl+W) to create handler functions for those messages.

Larry Mills Sr wrote:
In other words, the page is running without control until such a time as I can get the page to go to a function of my creation? Understand?

No, but don't get discouraged just yet.

Larry Mills Sr12-Nov-07 7:54

12-Nov-07 7:54

I tried that and nothing is done. The function the Wizard made is there, but since a property page cannot have (at lease it's not present in the class wizard ie WM_COMMAND) a OnCommand function the function is ignored when the User selects it. I checked under DeBug, the function is not called at all. Create a property page yourself and check it out, then you'll understand what I'm saying. The Class Wizard creates the function for IDC_TIRE ("CPage2::OnTire()"), but the program does not go there when IDC_TIRE is selected.

A C++ programming language novice, but striving to learn

David Crow12-Nov-07 8:03

12-Nov-07 8:03

Larry Mills Sr wrote:
I tried that...

Tell me exactly what you tried.

Larry Mills Sr wrote:
The function the Wizard made is there...

But what message is it handing?

Larry Mills Sr wrote:
but since a property page cannot have (at lease it's not present in the class wizard ie WM_COMMAND) a OnCommand function...

Why do you need, or even care about, an OnCommand() function? What are you wanting to use it for?

Larry Mills Sr wrote:
...but the program does not go there when IDC_TIRE is selected.

Are handling the EN_SETFOCUS message?

What does the message map look like?

Larry Mills Sr12-Nov-07 8:36

12-Nov-07 8:36

My message map is as follows:
// Generated message map functions
//{{AFX_MSG(CTrl_Pg2)
afx_msg void OnSetfocusFwdLtInsideTire();
afx_msg void OnMaxtextFwdLtInsideRim();
afx_msg void OnSetfocusFwdLtInsideRim();
afx_msg void OnMaxtextFwdLtInsideTire();
afx_msg void OnMaxtextFwdLtOutsideRim();
afx_msg void OnSetfocusFwdLtOutsideRim();
afx_msg void OnMaxtextFwdLtOutsideTire();
afx_msg void OnSetfocusFwdLtOutsideTire();
afx_msg void OnMaxtextFwdRtInsideRim();
afx_msg void OnSetfocusFwdRtInsideRim();
afx_msg void OnMaxtextFwdRtInsideTire();
afx_msg void OnSetfocusFwdRtInsideTire();
afx_msg void OnMaxtextFwdRtOutsideRim();
afx_msg void OnSetfocusFwdRtOutsideRim();
afx_msg void OnMaxtextFwdRtOutsideTire();
afx_msg void OnSetfocusFwdRtOutsideTire();
afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
afx_msg void OnKillfocusFwdLtInsideRim();
afx_msg void OnChangeFwdLtInsideRim();
afx_msg void OnChangeFwdLtInsideTire();
afx_msg void OnKillfocusFwdLtInsideTire();
afx_msg void OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags);
//}}AFX_MSG
DECLARE_MESSAGE_MAP()

BEGIN_MESSAGE_MAP(CTrl_Pg2, CNewWizPage)
//{{AFX_MSG_MAP(CTrl_Pg2)
ON_EN_SETFOCUS(IDC_FWD_LT_INSIDE_TIRE, OnSetfocusFwdLtInsideTire)
ON_EN_MAXTEXT(IDC_FWD_LT_INSIDE_RIM, OnMaxtextFwdLtInsideRim)
ON_EN_SETFOCUS(IDC_FWD_LT_INSIDE_RIM, OnSetfocusFwdLtInsideRim)
ON_EN_MAXTEXT(IDC_FWD_LT_INSIDE_TIRE, OnMaxtextFwdLtInsideTire)
ON_EN_MAXTEXT(IDC_FWD_LT_OUTSIDE_RIM, OnMaxtextFwdLtOutsideRim)
ON_EN_SETFOCUS(IDC_FWD_LT_OUTSIDE_RIM, OnSetfocusFwdLtOutsideRim)
ON_EN_MAXTEXT(IDC_FWD_LT_OUTSIDE_TIRE, OnMaxtextFwdLtOutsideTire)
ON_EN_SETFOCUS(IDC_FWD_LT_OUTSIDE_TIRE, OnSetfocusFwdLtOutsideTire)
ON_EN_MAXTEXT(IDC_FWD_RT_INSIDE_RIM, OnMaxtextFwdRtInsideRim)
ON_EN_SETFOCUS(IDC_FWD_RT_INSIDE_RIM, OnSetfocusFwdRtInsideRim)
ON_EN_MAXTEXT(IDC_FWD_RT_INSIDE_TIRE, OnMaxtextFwdRtInsideTire)
ON_EN_SETFOCUS(IDC_FWD_RT_INSIDE_TIRE, OnSetfocusFwdRtInsideTire)
ON_EN_MAXTEXT(IDC_FWD_RT_OUTSIDE_RIM, OnMaxtextFwdRtOutsideRim)
ON_EN_SETFOCUS(IDC_FWD_RT_OUTSIDE_RIM, OnSetfocusFwdRtOutsideRim)
ON_EN_MAXTEXT(IDC_FWD_RT_OUTSIDE_TIRE, OnMaxtextFwdRtOutsideTire)
ON_EN_SETFOCUS(IDC_FWD_RT_OUTSIDE_TIRE, OnSetfocusFwdRtOutsideTire)
ON_WM_LBUTTONDOWN()
ON_EN_KILLFOCUS(IDC_FWD_LT_INSIDE_RIM, OnKillfocusFwdLtInsideRim)
ON_EN_CHANGE(IDC_FWD_LT_INSIDE_RIM, OnChangeFwdLtInsideRim)
ON_EN_CHANGE(IDC_FWD_LT_INSIDE_TIRE, OnChangeFwdLtInsideTire)
ON_EN_KILLFOCUS(IDC_FWD_LT_INSIDE_TIRE, OnKillfocusFwdLtInsideTire)
ON_WM_KEYDOWN()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

Here 's an example of a function:

void CTrl_Pg2::OnSetfocusFwdLtInsideTire()
{
// TODO: Add your control notification handler code here
// BOOL m_bFwdLtATire in header
if(!m_bFwdLtTire)
{
DoFwdLeftTire();
}
m_bFwdLtTire = TRUE;
return;
}
and

void CTrl_Pg2::OnKillfocusFwdLtInsideTire()
{
// TODO: Add your control notification handler code here
m_bFwdLtTire = FALSE;
return;
}

A C++ programming language novice, but striving to learn

David Crow12-Nov-07 9:06

12-Nov-07 9:06

Ok, when IDC_FWD_LT_INSIDE_TIRE gets focus, OnSetfocusFwdLtInsideTire() is called, and when IDC_FWD_LT_INSIDE_TIRE loses focus, OnKillfocusFwdLtInsideTire() is called. Correct? What are you wanting to do in those functions?

Larry Mills Sr12-Nov-07 10:41

12-Nov-07 10:41

Figure out how to get the data. OnKillfocusFwdLtInsideTire() I know tells me the User has clicked somewhere else. I simply don't know where to collect the data at.
CEdit* pEdit = (CEdit*) GetDlgItem(IDC_FWD_LT_INSIDE_TIRE );
CString str = "";
pEdit->GetWindowText(str);// get the data
Where do I put the above code to get the data?

A C++ programming language novice, but striving to learn

David Crow12-Nov-07 10:44

12-Nov-07 10:44

Larry Mills Sr wrote:
Where do I put the above code to get the data?

In OnKillfocusFwdLtInsideTire(), if that is the point at which you want the data.

Larry Mills Sr12-Nov-07 11:01

12-Nov-07 11:01

Okay, I'll try it there. Question: If the User enters the data then selects [Next] or [Back] on the property sheet does the OnKillfocusFwdLtInsideTire() function still get called before the page becomes inactive?

Also Must you always have to have an ON_EN_SETFOCUS and an ON_EN_KILLFOCUS or can you just have an ON_EN_KILLFOCUS function.

A C++ programming language novice, but striving to learn

David Crow12-Nov-07 12:05

12-Nov-07 12:05

Larry Mills Sr wrote:
If the User enters the data then selects [Next] or [Back] on the property sheet does the OnKillfocusFwdLtInsideTire() function still get called before the page becomes inactive?

The best way to find the answer to this is just to try it and see. Set a breakpoint in the handler for EN_KILLFOCUS and PSN_KILLACTIVE to see which is called first.

Larry Mills Sr wrote:
Also Must you always have to have an ON_EN_SETFOCUS and an ON_EN_KILLFOCUS or can you just have an ON_EN_KILLFOCUS function.

That depends on what you want to be notified of. If you only have a handler for the ON_EN_KILLFOCUS message, you will not know when the associated control gains focus.

Larry Mills Sr13-Nov-07 4:47