TanSanC

C# Panel DirectShow Video ScrollBar

        public System.Windows.Forms.Panel pnlVideo;

        public QuartzTypeLib.FilgraphManager m_objFilterGraph = null;

        public QuartzTypeLib.IBasicAudio m_objBasicAudio = null;

        public QuartzTypeLib.IVideoWindow m_objVideoWindow = null;

        public QuartzTypeLib.IMediaEvent m_objMediaEvent = null;

        public QuartzTypeLib.IMediaEventEx m_objMediaEventEx = null;

        public QuartzTypeLib.IMediaPosition m_objMediaPosition = null;

        public QuartzTypeLib.IMediaControl m_objMediaControl = null;

         m_objVideoWindow.SetWindowPosition(pnlVideo.ClientRectangle.Left,

                        pnlVideo.ClientRectangle.Top,

                        pnlVideo.ClientRectangle.Height * (int)videoResolutionRate,

                        pnlVideo.ClientRectangle.Height);

m_objVideoWindow shows the video at original rate

1. ScrollBar Padding 20px

                    m_objVideoWindow.SetWindowPosition(pnlVideo.ClientRectangle.Left,

                        pnlVideo.ClientRectangle.Top,

                        (pnlVideo.ClientRectangle.Height - 20) * (int)videoResolutionRate,

                        pnlVideo.ClientRectangle.Height - 20);

2. Size and Scroll Bar Enable

                pnlVideo.HorizontalScroll.Visible = true;

                pnlVideo.AutoScroll = true;

                pnlVideo.MaximumSize = new Size(this.ClientSize.Width, this.ClientSize.Height - 80);

                pnlVideo.AutoScrollMinSize = new Size((int)UserControl1.videoResolutionRate * (this.ClientSize.Height - 80), this.ClientSize.Height - 80);

                pnlVideo.ClientSize = new Size(this.ClientSize.Width, this.ClientSize.Height - 80);

                pnlVideo.Size = new Size(this.ClientSize.Width, this.ClientSize.Height - 80);

MFCGridCtrl OnEraseBkgnd ScrollBar Redraw

MFC Dialog Color 를 바꾸기 위해

OnEraseBkgnd 을 오버라이딩하여 사용하면

Dialog 를 새로 그리게 되는데

이때 CGridCtrl 의 스크롤바 영역도 같이 새로 그리게 된다.

그래서 스크롤바가 존재하지만 안보이는 경우가 발생한다.

그럴때는 OnEraseBkgnd 에서 Dialog 를 새로그린 다음

m_Grid.SetRedraw(true, true);

Redraw 를 하면

스크롤 바를 새로 그린다.

MFCGridCtrl CGridCtrl ScrollBar Visible

If you change Dialog color used by OnEraseBkgnd();

you can't see CGridCtrl's ScrollBar

in that case, you should add m_Grid.SetRedraw(true, true); to OnEraseBkgnd();

BOOL CMyDialog::OnEraseBkgnd(CDC* pDC)
{
	// TODO: 여기에 메시지 처리기 코드를 추가 및/또는 기본값을 호출합니다.

	CRect rect;

	GetClientRect(&rect);

	CBrush myBrush(RGB(255, 255, 255));    // dialog background color <- 요기 바꾸면 됨.
	
	CBrush *pOld = pDC->SelectObject(&myBrush);

	BOOL bRes = pDC->PatBlt(0, 0, rect.Width(), rect.Height(), PATCOPY);

	pDC->SelectObject(pOld);    // restore old brush

	m_Grid.SetRedraw(true, true);

	return bRes;                       // 	return CDialog::OnEraseBkgnd(pDC);
}

MFC Control Color Change

afx_msg HBRUSH OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor);

      CBrush m_combo_brush;

      m_combo_brush.CreateSolidBrush(RGB(0, 0, 255)); // Brush 속성을 생성한다.

HBRUSH MyDialog::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)

{

      HBRUSH hbr = CDialogEx::OnCtlColor(pDC, pWnd, nCtlColor);

      // TODO:  여기서 DC의 특성을 변경합니다.

      switch (nCtlColor) {

      case CTLCOLOR_STATIC:

            pDC->SetTextColor(RGB(255, 0, 0));

            pDC->SetBkColor(RGB(0, 0, 0));

            return (HBRUSH)(m_combo_brush);

      case CTLCOLOR_LISTBOX:

            pDC->SetTextColor(RGB(0, 255, 0));

            pDC->SetBkColor(RGB(0, 0, 0));

            return (HBRUSH)(m_combo_brush);

      default:

            break;

      }

      if (pWnd->m_hWnd == GetDlgItem(IDC_SERVERLIST_COMBO)->m_hWnd)

            hbr = HBRUSH(m_combo_brush);

      // TODO:  기본값이 적당하지 않으면 다른 브러시를 반환합니다.

      return hbr;

}

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