I'm having some issues with a scrollbar. I can get it displayed and everything, but I can't get any messages. Below is the code. Any ideas
// BrowseMissionDlg.cpp : implementation file
//
#include
"stdafx.h"
#include
"MDAE.h"
#include
".\browsemissiondlg.h"
// CBrowseMissionDlg dialog
IMPLEMENT_DYNAMIC(CBrowseMissionDlg, CDialog)
CBrowseMissionDlg::CBrowseMissionDlg(CWnd* pParent
/*=NULL*/)
: CDialog(CBrowseMissionDlg::IDD, pParent)
, m_nMaxWindowLines(0)
, m_Exit(FALSE)
, m_Viewable(FALSE)
, m_WindowBuffer(m_DeviceInterface)
, m_CurrentRecordOffset(0)
{
}
CBrowseMissionDlg::~CBrowseMissionDlg()
{
}
void
CBrowseMissionDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
DDX_Control(pDX, IDC_MISSION_DISPLAY, m_BrowseWindow);
}
BEGIN_MESSAGE_MAP(CBrowseMissionDlg, CDialog)
ON_WM_TIMER()
ON_WM_VSCROLL()
END_MESSAGE_MAP()
// CBrowseMissionDlg message handlers
BOOL CBrowseMissionDlg::PreTranslateMessage(MSG* pMsg)
{
if(pMsg->message == WM_KEYDOWN)
{
if(((int) pMsg->wParam) == VK_UP)
{
DisplayPreviousRecord();
}
if(((int) pMsg->wParam) == VK_DOWN)
{
DisplayNextRecord();
}
if(((int) pMsg->wParam) == VK_PRIOR)
{
PageUp();
}
if(((int) pMsg->wParam) == VK_NEXT)
{
PageDown();
}
}
return CDialog::PreTranslateMessage(pMsg);
}
BOOL CBrowseMissionDlg::OnInitDialog()
{
CDialog::OnInitDialog();
// Figure out the height of a line.
CDC * pDC;
pDC = m_BrowseWindow.GetDC();
TEXTMETRIC Metrics;
pDC->GetTextMetrics(&Metrics);
int LineHeight = Metrics.tmExternalLeading + Metrics.tmHeight;
// Figure out how many lines can be put into the window.
CRect WindowRect;
m_BrowseWindow.GetRect(&WindowRect);
int WindowHeight = WindowRect.BottomRight().y - WindowRect.TopLeft().y;
m_nMaxWindowLines = WindowHeight/LineHeight;
m_WindowBuffer.StartBufferFiller();
int SizeDataUsed = m_DeviceInterface.GetSizeUsedData();
SCROLLINFO ScrollInfo;
m_BrowseWindow.GetScrollInfo(SB_VERT, &ScrollInfo);
ScrollInfo.fMask = SIF_DISABLENOSCROLL | SIF_POS | SIF_RANGE;
ScrollInfo.nMax = m_DeviceInterface.GetSizeUsedData();
ScrollInfo.nMin = 0;
m_BrowseWindow.SetScrollInfo(SB_VERT, &ScrollInfo);
//m_TimerID = SetTimer(1, 500, NULL);
return TRUE; // return TRUE unless you set the focus to a control
// EXCEPTION: OCX Property Pages should return FALSE
}
// Display's the next record in the display window.
void
CBrowseMissionDlg::DisplayNextRecord(void)
{
CString WindowText;
m_WindowBuffer.MoveWindowBy(1);
m_CurrentRecordOffset = m_WindowBuffer.GetCurrentWindow(WindowText);
if(m_CurrentRecordOffset != -1)
{
AddMessageToWindow(WindowText);
}
}
// Display's the previous record in the display window.
void
CBrowseMissionDlg::DisplayPreviousRecord(void)
{
CString WindowText;
m_WindowBuffer.MoveWindowBy(-1);
m_CurrentRecordOffset = m_WindowBuffer.GetCurrentWindow(WindowText);
if(m_CurrentRecordOffset != -1)
{
AddMessageToWindow(WindowText);
}
}
// Displays the next page of data.
void
CBrowseMissionDlg::PageUp(void)
{
CString WindowText;
m_WindowBuffer.MoveWindowBy(-m_nMaxWindowLines);
m_CurrentRecordOffset = m_WindowBuffer.GetCurrentWindow(WindowText);
if(m_CurrentRecordOffset != -1)
{
AddMessageToWindow(WindowText);
}
}
// Displays the next page of data.
void
CBrowseMissionDlg::PageDown(void)
{
CString WindowText;
m_WindowBuffer.MoveWindowBy(m_nMaxWindowLines);
m_CurrentRecordOffset = m_WindowBuffer.GetCurrentWindow(WindowText);
if(m_CurrentRecordOffset != -1)
{
AddMessageToWindow(WindowText);
}
}
// Gets the next block of data and puts it in m_NextBlock array.
void
CBrowseMissionDlg::GetNextBlock(void)
{
}
// Gets the next block of data and puts it in m_PreviousBlock.
void
CBrowseMissionDlg::GetPreviousBlock(void)
{
/*
if(m_PreviousBlock.GetCount() == 0)
{
return;
}*/
}
void
CBrowseMissionDlg::OnCancel()
{
KillTimer(m_TimerID);
CDialog::OnCancel();
}
void
CBrowseMissionDlg::OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar)
{
switch(nSBCode)
{
case SB_LINEDOWN:
{
TRACE("LINE DOWN\n");
break;
}
case SB_LINEUP:
TRACE("LINE UP\n");
break;
case SB_PAGEUP:
TRACE("PAGE UP\n");
break;
case SB_PAGEDOWN:
TRACE("PAGE DOWN\n");
break;
default:
TRACE("Got a wierd code\n");
break;
}
CDialog::OnVScroll(nSBCode, nPos, pScrollBar);
}
