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[交流] 深入浅出 CPropertySheet

为了最大限度的发挥属性页的效用，首先让我们先从 CPropertySheet 继承一个新类，取名为 CMyPropSheet.

接着便可以进行下面的各种操作:

l       隐藏属性页默认按钮
隐藏掉Apply应用按钮:

propsheet.m_psh.dwFlags |= PSH_NOAPPLYNOW;
或隐藏掉Cancel取消按钮:

CWnd *pWnd = GetDlgItem( IDCANCEL );
pWnd->ShowWindow( FALSE );

l       移动属性页按钮
首先，要获取按钮的句柄，然后就可以象对待窗体一样处理它们了. 下面代码先隐藏掉Apply和Help铵钮，再把OK和Cancel按移动到右侧。

BOOL CMyPropSheet::OnInitDialog ()
{
BOOL bResult = CPropertySheet::OnInitDialog();

int ids [] = {IDOK, IDCANCEL};//, ID_APPLY_NOW, IDHELP };

// Hide Apply and Help buttons
CWnd *pWnd = GetDlgItem (ID_APPLY_NOW);
pWnd->ShowWindow (FALSE);
pWnd = GetDlgItem (IDHELP);
pWnd->ShowWindow (FALSE);

CRect rectBtn;
int nSpacing = 6;       // space between two buttons...

for( int i =0; i < sizeof(ids)/sizeof(int); i++)
{
      GetDlgItem (ids )->GetWindowRect (rectBtn);

      ScreenToClient (&rectBtn);
      int btnWidth = rectBtn.Width();
      rectBtn.left = rectBtn.left + (btnWidth + nSpacing)* 2;
      rectBtn.right = rectBtn.right + (btnWidth + nSpacing)* 2;

      GetDlgItem (ids )->MoveWindow(rectBtn);
}


return bResult;
}
下面代码移动所有按钮到右侧，并且重新置属性页为合适的大小.

BOOL CMyPropSheet::OnInitDialog ()
{
BOOL bResult = CPropertySheet::OnInitDialog();


int ids[] = { IDOK, IDCANCEL, ID_APPLY_NOW };

CRect rectWnd;
CRect rectBtn;

GetWindowRect (rectWnd);
GetDlgItem (IDOK)->GetWindowRect (rectBtn);

int btnWidth = rectBtn.Width();
int btnHeight = rectBtn.Height();
int btnOffset = rectWnd.bottom - rectBtn.bottom;
int btnLeft = rectWnd.right - rectWnd.left;

rectWnd.bottom = rectBtn.top;
rectWnd.right = rectWnd.right + btnWidth + btnOffset;
MoveWindow(rectWnd);

rectBtn.left = btnLeft;
rectBtn.right = btnLeft + btnWidth;

for (int i = 0; i < sizeof (ids) / sizeof (int); i++)
{
      rectBtn.top = (i + 1) * btnOffset + btnHeight * i;
      rectBtn.bottom = rectBtn.top + btnHeight;
      GetDlgItem (ids )->MoveWindow (rectBtn);
}

return bResult;
}
l       改变属性页上的标签文字
首先修改TC_ITEM结构，然后用 SetItem 来修改标签文字，如下代码:

TC_ITEM item;
item.mask = TCIF_TEXT;
item.pszText = "New Label";

//Change the label of the first tab (0 is the index of the first tab)...
GetTabControl ()->SetItem (0, &item);
l       改变属性页标签文字的字体属性
如下代码:

m_NewFont.CreateFont (14, 0, 0, 0, 800, TRUE, 0, 0, 1, 0, 0, 0, 0, _T("Arial" );
GetTabControl()->SetFont (&m_NewFont);
l       在属性页标签上显示位图
可以用 CImageList 建立图像. 用 SetItem 来设置，如下代码所示:

BOOL CMyPropSheet::OnInitDialog ()
{
BOOL bResult = CPropertySheet::OnInitDialog();

m_imageList.Create (IDB_MYIMAGES, 13, 1, RGB(255,255,255));
CTabCtrl *pTabCtrl = GetTabControl ();
pTabCtrl->SetImageList (&m_imageList);

TC_ITEM item;
item.mask = TCIF_IMAGE;
for (int i = 0; i < NUMBER_OF_TABS; i++)
{
      item.iImage = i;
      pTabCtrl->SetItem (i, &item );
}

return bResult;
}
l       在属性页左下角显示位图
如下代码所示：

void CMyPropSheet::OnPaint ()
{
CPaintDC dc(this); // device context for painting

int nOffset = 6;
// load IDB_BITMAP1 from our resources
CBitmap bmp;
if (bmp.LoadBitmap (IDB_BITMAP1))
{
      // Get the size of the bitmap
      BITMAP bmpInfo;
      bmp.GetBitmap (&bmpInfo);

      // Create an in-memory DC compatible with the
      // display DC we're using to paint
      CDC dcMemory;
      dcMemory.CreateCompatibleDC (&dc);

      // Select the bitmap into the in-memory DC
      CBitmap* pOldBitmap = dcMemory.SelectObject (&bmp);

      // Find a bottom-left point for the bitmap in the client area
      CRect rect;
      GetClientRect (&rect);
      int nX = rect.left + nOffset;
      int nY = rect.top + (rect.Height () - bmpInfo.bmHeight) - nOffset;

      // Copy the bits from the in-memory DC into the on-
      // screen DC to actually do the painting. Use the centerpoint
      // we computed for the target offset.
      dc.BitBlt (nX, nY, bmpInfo.bmWidth, bmpInfo.bmHeight, &dcMemory,
         0, 0, SRCCOPY);

      dcMemory.SelectObject (pOldBitmap);
}

// Do not call CPropertySheet::OnPaint() for painting messages
}
l       在属性页右下角显示3D文字Logo
如下代码：

void CMyPropSheet::OnPaint ()
{
/////////////////////////////////////////////////////////////////////////
      //在TAB按钮旁边显示3D文字提示,jingzhou xu
      Cstring m_LogoName = “属性页”;
//       if(m_LogoName == ""
//             return;

      GetWindowRect(rect);
      ScreenToClient(rect);

      LOGFONT logFont;
      ZeroMemory((void*)&logFont,sizeof(logFont));
      strcpy(logFont.lfFaceName,"宋体";
      logFont.lfHeight = -12;
      logFont.lfWeight = 400;
      logFont.lfCharSet = GB2312_CHARSET;
      logFont.lfOutPrecision = 3;
      logFont.lfClipPrecision = 2;
      logFont.lfQuality = 1;
      logFont.lfPitchAndFamily = 2;
      m_font.CreateFontIndirect(&logFont);
      SetFont(&m_font);
      CFont       *pOldFont = pDC->SelectObject(&m_font);

               rect.left += 6;
               rect.right -= 6;
               rect.bottom -= 1;
               rect.top = rect.bottom - ITEMBUTTON_HEIGHT + 1;


      CFont m_LogoFont;
      CString sLogoString;

      m_LogoFont.CreateFont(rect.Height()*4/5, 0, 0, 0, FW_BOLD, 1, FALSE, FALSE,
                     DEFAULT_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS, DEFAULT_QUALITY,
                     FIXED_PITCH | FF_ROMAN, "楷体_GB2312";

      sLogoString = m_LogoName;

      RECT m_rDataBox;
      CopyRect(&m_rDataBox,&rect);

      TEXTMETRIC tm;
      pDC->GetTextMetrics(&tm);
      CFont* oldFont = pDC->SelectObject(&m_LogoFont);
      CSize sz = pDC->GetTextExtent(sLogoString, sLogoString.GetLength());
      //用GetTextExtent来计算字体logo大小，依靠于设备环境，使用logo位于右下角
      m_rDataBox.left = m_rDataBox.right  - sz.cx - tm.tmAveCharWidth/2;
      m_rDataBox.top  = m_rDataBox.bottom - sz.cy - tm.tmHeight/5;
      pDC->SetBkMode(TRANSPARENT);
      //用3D字体显示，先黑后白，最后再用默认色
      COLORREF oldColor = pDC->SetTextColor(GetSysColor(COLOR_3DDKSHADOW));
      pDC->DrawText(sLogoString, sLogoString.GetLength(), &m_rDataBox, DT_VCENTER | DT_SINGLELINE | DT_CENTER);
      m_rDataBox.left -= tm.tmAveCharWidth;
      pDC->SetTextColor(GetSysColor(COLOR_3DHILIGHT));
      pDC->DrawText(sLogoString, sLogoString.GetLength(), &m_rDataBox, DT_VCENTER | DT_SINGLELINE | DT_CENTER);
      m_rDataBox.left += 3*tm.tmAveCharWidth/5;
      pDC->SetTextColor(RGB(0,0,255));
      pDC->DrawText(sLogoString, sLogoString.GetLength(), &m_rDataBox, DT_VCENTER | DT_SINGLELINE | DT_CENTER);

      //释放资源
      pDC->SelectObject(oldFont);
      pDC->SetTextColor(oldColor);
      m_LogoFont.DeleteObject();
      /////////////////////////////////////////////////////////////////////////
}


l       在属性页中动态加入其它控件
下面演示如何在左下角加入一Edit控件:

In MyPropSheet.h:

public:
CEdit m_edit;
In MyPropSheet.cpp:

BOOL CMyPropSheet::OnInitDialog ()
{
BOOL bResult = CPropertySheet::OnInitDialog ();


CRect rect;

int nHeight = 24;
int nWidth = 120;
int nOffset = 6;

GetClientRect (&rect);

// Find a bottom-left point for the edit control in the client area
int nX = rect.left + nOffset;
int nY = rect.top + (rect.Height() - nHeight) - nOffset;

// finally create the edit control
m_Edit.CreateEx (WS_EX_CLIENTEDGE, _T("EDIT", NULL,
                  WS_CHILD | WS_VISIBLE | WS_TABSTOP | WS_BORDER,
      nX, nY, nWidth, nHeight, m_hWnd, 0, 0 );

return bResult;
}

[ Last edited by 幻影无痕 on 2006-11-27 at 08:14 ]

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