asked on

GetUpDown, from CSpinButtonCtrl

Hi, I can get the pos.. by caling CSpinButtonCtrl.GetPos(), But I don't need it.. All I need to know is, if I hit the UP, or DOWN button...

How is that done ?

What I've done now is, somthing lik this

If(OldPop<NewPos)POS_IS_INCREASED = true;

But the programming looks bad, can't I get a flag, that tels me if its up, or down ???

CB.

MichaelS

You have to take a look at UDN_DELTAPOS message. It's sould arrive to the parent of you Spin control in the form of WM_NOTIFY message.

lParam of the message is a pointer to the NMUPDOWN structure where you have to check iDelta value. This is a change you need.

MadYugoslav

CSpinButtonControl sent notify message UDN_DELTAPOS.
Get that message from Your control and You will have as lParam struct NMUPDOWN.
struct
{
NMHDR hdr;
int iPos;// current position
int iDelta;// proposed change in position
} NMUPDOWN;

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Meir Rivkin

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win32

ASKER

How do I find, UDN_DELTAPOS... ?
if (HIWORD (wParam) == UDN_DELTAPOS) MessageBox("Test");

Like this or how, is it to be found ?

win32

ASKER

Sorry. I found it !!

MichaelS

As I said it gets sent in the form of WM_NOTIFY message. So it sould be something like that:

CYourDlg::OnWmNotify(...)
{ if(HOWORD(wParam) == UDN_DELTAPOS)
MessageBox("text");
}

Meir Rivkin

win32:

add this declaration to the .h file:

add this code to the MESSAGE MAP in the .cpp:

BEGIN_MESSAGE_MAP(...)
.
.
ON_NOTIFY(UDN_DELTAPOS, IDC_USER_ID_SPIN, OnDeltaposUserIdSpin)
.
.
END_MESSAGE_MAP()

IDC_USER_ID_SPIN-> is the spin control resource ID

the callbacl function of the spin control:
void CMyDlg::OnDeltaposUserIdSpin(NMHDR* pNMHDR, LRESULT* pResult)
{
NM_UPDOWN* pNMUpDown = (NM_UPDOWN*)pNMHDR;

if(pNMUpDown->iDelta > 0)
{
//up
}
else
{
//down
}

UpdateData();

*pResult = 0;
}

thats it...

Meir Rivkin

add this declaration to the .h file:

afx_msg void OnDeltaposUserIdSpin(NMHDR* pNMHDR, LRESULT* pResult);

now its ok....

cheers mate