我设计了一个属性表,并在OnPaint()
事件中将其页脚绘制为某个渐变。
页脚如下图所示。观察以红色圈出的按钮区域。
在OnPaint中我的表现如下,
//CMySheet is derived from CPropertySheet.
void CMySheet::OnPaint()
{
if(IsIconic())
{
CPaintDC dc(this); // device context for painting
SendMessage(WM_ICONERASEBKGND,reinterpret_cast<WPARAM>(dc.GetSafeHdc()),0);
int cxIcon = GetSystemMetrics(SM_CXICON);
int cyIcon = GetSystemMetrics(SM_CYICON);
CRect rect;
GetClientRect(&rect);
int x = (rect.Width() - cxIcon + 1)/2;
int y = (rect.Height() - cyIcon + 1)/2;
}
else
{
CPaintDC dc(this);
UpdateData(false);
CRect Clientrect;
GetClientRect(&Clientrect);
LONG RectDifference = ((Clientrect.bottom - m_PageRectBottom)-2);//m_pageRectBottom is of page bottom rect
CRect rectFooter(Clientrect.top,(Clientrect.bottom - RectDifference),Clientrect.right,Clientrect.bottom);//638//520
//CRect rectFooter(0,390,640,445);
FillGradation(&dc,rectFooter,RGB(150,150,150),RGB(0,0,0),true);
}
}
}
void CMySheet::OnPaint(CDC* pDC, CRect rc, COLORREF colBegin, COLORREF colEnd, bool bV)
{
TRIVERTEX av[2] = {rc.left,rc.top,GetRValue(colBegin) << 8,GetGValue(colBegin) << 8,GetBValue(colBegin) << 8 ,0xff00,
rc.right,rc.bottom,GetRValue(colEnd) << 8 ,GetGValue(colEnd) << 8,GetBValue(colEnd) << 8,0xff00,};
GRADIENT_RECT gr = {0,1};
ULONG ulMode;
if(bV){
ulMode = GRADIENT_FILL_RECT_V;
}
else{
ulMode = GRADIENT_FILL_RECT_H;
}
GradientFill(pDC->GetSafeHdc(),av,2,&gr,1,ulMode);
}
上图中的按钮不透明,但实际上按钮的背景应如下图所示。
向导按钮背景或页脚区域应如上图所示。但是,如果您可以查看第一张图像,则“返回”按钮周围会出现一些白色,“下一步”和“取消”按钮。
HBRUSH CMySheet::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
HBRUSH hbr = CPropertySheet::OnCtlColor(pDC, pWnd, nCtlColor);
if((pWnd->GetDlgCtrlID() == ID_WIZBACK) || (pWnd->GetDlgCtrlID() == ID_WIZNEXT) ||
(pWnd->GetDlgCtrlID() == ID_WIZFINISH) || (pWnd->GetDlgCtrlID() == IDCANCEL))
{
return CreateSolidBrush(RGB(130,130,130));
}
return hbr;
}
如果我这样做,图像如下灰色。但是该颜色应该是渐变的,我无法创建渐变画笔。
我尝试在CtlColor中返回NULL,但我看不出任何差异。
从CPropertySheet
和CButton
,
//Overrided the DrawItem and PreSubclassWindow
void CPropSheetButton::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{
CDC* pDC = CDC::FromHandle(lpDrawItemStruct->hDC);
CRect rect = lpDrawItemStruct->rcItem;
UINT state = lpDrawItemStruct->itemState;
if (state & ODS_SELECTED)
pDC->DrawFrameControl(rect, DFC_BUTTON, DFCS_BUTTONPUSH | DFCS_PUSHED);
else
pDC->DrawFrameControl(rect, DFC_BUTTON, DFCS_BUTTONPUSH);
UINT uStyle = DFCS_BUTTONPUSH;
HTHEME hTheme = OpenThemeData(m_hWnd, L"BUTTON");
HRESULT hr = DrawThemeBackground(hTheme, lpDrawItemStruct->hDC, BP_PUSHBUTTON, PBS_DEFAULTED, &lpDrawItemStruct->rcItem, NULL);
// Get the button's text.
CString strText;
GetWindowText(strText);
CloseThemeData(hTheme);
::DrawText(lpDrawItemStruct->hDC, strText, strText.GetLength(),
&lpDrawItemStruct->rcItem, DT_SINGLELINE | DT_VCENTER | DT_CENTER);
int nMode = pDC->SetBkMode(TRANSPARENT);
pDC->SetBkMode(nMode);
}
void CPropSheetButton::PreSubclassWindow()
{
CButton::PreSubclassWindow();
ModifyStyle(0, BS_OWNERDRAW); // make the button owner drawn
}
//In the Sheet derived class OnInitDialog ,
BOOL CMySheetWizard::OnInitDialog()
{
CPropertySheet::OnInitDialog();
CMyButton backbutton;
BOOL bRet = backbutton.SubclassDlgItem(ID_WIZBACK,this);
}
任何人都可以告诉我如何删除这些按钮周围的边框。
答案 0 :(得分:0)
使用你的绘画代码渲染背景和一些额外的类,我能够实现这个......
我认为这是你想要实现的目标。我能够通过以下方式实现这一目标:
这里是从按钮类中绘制按钮的代码。
void SheetButton::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{
UINT uStyle = DFCS_BUTTONPUSH;
HTHEME hTheme = OpenThemeData(m_hWnd, L"BUTTON");
DrawThemeBackground(hTheme, lpDrawItemStruct->hDC, BP_PUSHBUTTON, PBS_DEFAULTED, &lpDrawItemStruct->rcItem, NULL);
// Get the button's text.
CString strText;
GetWindowText(strText);
// Draw the button text using the text color red.
COLORREF crOldColor = ::SetTextColor(lpDrawItemStruct->hDC, RGB(255, 0, 0));
::DrawText(lpDrawItemStruct->hDC, strText, strText.GetLength(),
&lpDrawItemStruct->rcItem, DT_SINGLELINE | DT_VCENTER | DT_CENTER);
::SetTextColor(lpDrawItemStruct->hDC, crOldColor);
CloseThemeData(hTheme);
}
顺便说一句......你仍然需要添加代码来返回按钮的空刷。但是,我没有考虑绘图代码中按钮的不同状态。我把它留给你做练习。