原生的复选框(checkbox button)和单选按钮(radio button)实现透明背景效果解决方案

/********************************************************************************* * Author : orbit * * Description : 这个文件定义CWzButtonImpl类，这是一个支持OwnerDraw的按钮类， * * Date : Sep 15, 2003 * * Last-modified : Nov 21, 2003 * * Contact us : inte2000@163.com,support@winmsg.com * * Web Page : http://www.winmsg.com/cn/orbit.htm * * http://blog.csdn.net/orbit/ (关于代码的更新) * *********************************************************************************/ #include "stdafx.h" #include "WzButton.h" //##ModelId=43538E3F03AB CWzButtonImpl::CWzButtonImpl() { m_MouseOnButton = 0; m_bIsFlat = 1; m_bDrawBorder = 1; m_bDrawFlatFocus = 1; m_bAlwaysTrack = 1; m_hBtnCursor = NULL; InitDefaultColor(); } //##ModelId=43538E3F03AC CWzButtonImpl::~CWzButtonImpl() { } //##ModelId=43538E3F03B9 BOOL CWzButtonImpl::SubclassWindow(HWND hWnd) { ATLASSERT(m_hWnd == NULL); ATLASSERT(::IsWindow(hWnd)); BOOL bRet = CWindowImpl<CWzButtonImpl, CButton>::SubclassWindow(hWnd); if(bRet) { Init(); } return bRet; } //##ModelId=43538E3F03BB void CWzButtonImpl::Init() { UINT nBS = GetButtonStyle(); if(nBS & BS_DEFPUSHBUTTON) m_bDefaultBtn = 1; else m_bDefaultBtn = 0; SetButtonStyle(nBS | BS_OWNERDRAW); } //##ModelId=43538E3F03C8 void CWzButtonImpl::InitDefaultColor() { // m_crInactiveBg = RGB(222,222,222); m_crInactiveBg = RGB(215,241,215); m_crActiveBg = RGB(43,200,213); m_crText = RGB(0,0,255); m_crTextHilight = ::GetSysColor(COLOR_HIGHLIGHTTEXT); m_crBorder = RGB(254,128,62); } //##ModelId=43538E3F03C9 void CWzButtonImpl::SetFlat(BOOL bState, BOOL bRepaint) { m_bIsFlat = bState; if(bRepaint) Invalidate(); } //##ModelId=43538E3F03D9 void CWzButtonImpl::SetFlatFocus(BOOL bDrawFlatFocus, BOOL bRepaint) { m_bDrawFlatFocus = bDrawFlatFocus; // Repaint the button if(bRepaint) Invalidate(); } // End of SetFlatFocus //##ModelId=43538E400011 void CWzButtonImpl::SetInactiveBgColor(COLORREF crNew, BOOL bRepaint) { m_crInactiveBg = crNew; if(bRepaint) Invalidate(); } //##ModelId=43538E400003 void CWzButtonImpl::SetActiveBgColor(COLORREF crNew, BOOL bRepaint) { m_crActiveBg = crNew; if (bRepaint) Invalidate(); } //##ModelId=43538E40001F void CWzButtonImpl::SetTextInactiveColor(COLORREF crNew, BOOL bRepaint) { m_crText = crNew; if (bRepaint) Invalidate(); } //##ModelId=43538E400022 void CWzButtonImpl::SetTextActiveColor(COLORREF crNew, BOOL bRepaint) { m_crTextHilight = crNew; if (bRepaint) Invalidate(); } //##ModelId=43538E40002F void CWzButtonImpl::SetBorderColor(COLORREF crNew, BOOL bRepaint) { m_crBorder = crNew; if (bRepaint) Invalidate(); } //##ModelId=43538E40003F LRESULT CWzButtonImpl::OnCaptureChanged(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& /*bHandled*/) { if(m_MouseOnButton == 1) { ReleaseCapture(); Invalidate(); } return 0; } //##ModelId=43538E400053 LRESULT CWzButtonImpl::OnMouseMove(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled) { LRESULT lr = CWindowImpl<CWzButtonImpl, CButton>::DefWindowProc(uMsg,wParam,lParam); bHandled = TRUE; POINT point = { GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam) }; UINT nFlags = wParam; // HWND hWnd; // Finestra attiva HWND hParent; // Finestra che contiene il bottone // If the mouse enter the button with the left button pressed then do nothing if (nFlags & MK_LBUTTON && m_MouseOnButton == 0) return lr; // If our button is not flat then do nothing if (m_bIsFlat == 0) return lr; //hWnd = ::GetActiveWindow(); hParent = ::GetParent(m_hWnd); if ((::GetCapture() != m_hWnd) && (hParent != NULL)) { m_MouseOnButton = 1; //SetFocus(); // Thanks Ralph! SetCapture(); Invalidate(); } else { RECT rc; GetClientRect(&rc); if (!PtInRect(&rc,point)) { // Redraw only if mouse goes out if (m_MouseOnButton == 1) { m_MouseOnButton = 0; Invalidate(); } // If user is NOT pressing left button then release capture! if (!(nFlags & MK_LBUTTON)) ReleaseCapture(); } } return lr; } //##ModelId=43538E400061 LRESULT CWzButtonImpl::OnSetCursor(UINT /*uMsg*/, WPARAM wParam, LPARAM lParam, BOOL& bHandled) { // If a cursor was specified then use it! if (m_hBtnCursor != NULL) { ::SetCursor(m_hBtnCursor); bHandled = TRUE; return TRUE; } return 0; } //##ModelId=43538E400070 LRESULT CWzButtonImpl::OnKillFocus(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled) { // If our button is not flat then do nothing if (m_bIsFlat == 0) return 0; // if (m_MouseOnButton == 1) // { m_MouseOnButton = 0; Invalidate(); // } return 0; } //##ModelId=43538E40007F void CWzButtonImpl::DrawItem (LPDRAWITEMSTRUCT lpdis) { HPEN hOldPen; BOOL bIsPressed = (lpdis->itemState & ODS_SELECTED); BOOL bIsFocused = ::GetFocus() == m_hWnd;//(lpdis->itemState & ODS_FOCUS) == ODS_FOCUS; BOOL bIsDisabled = (lpdis->itemState & ODS_DISABLED); // BOOL bIsDefault = (lpDIS->itemState & ODS_DEFAULT); HDC hDC = lpdis->hDC; RECT itemRect = lpdis->rcItem; SetBkMode(hDC,TRANSPARENT); if (m_bIsFlat == 0) { if (bIsFocused || m_bDefaultBtn == 1) { HBRUSH hbr = CreateSolidBrush(RGB(0,0,0)); FrameRect(hDC,&itemRect, hbr);//draw a black color thin line around button DeleteObject(hbr); InflateRect(&itemRect,-1,-1); } } // Prepare draw... paint button's area with background color COLORREF crBkgnd,crText,crFrame; if(bIsDisabled) { crFrame = GetSysColor(COLOR_INACTIVEBORDER); crText = GetSysColor(COLOR_GRAYTEXT); crBkgnd = m_crInactiveBg; } else { if ((m_MouseOnButton == 1) || (bIsPressed)) { crBkgnd = m_crActiveBg; crText = m_crTextHilight; } else { crBkgnd = m_crInactiveBg; crText = m_crText; } crFrame = m_crBorder; } //draw background SetBkColor(hDC, crBkgnd); ExtTextOut(hDC, 0, 0, ETO_OPAQUE, &itemRect, NULL, 0, NULL); // Draw pressed button if (bIsPressed) { HPEN penBtnHiLight = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_3DHILIGHT));//COLOR_3DLIGHT)); // Bianco HPEN penBtnShadow = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_3DSHADOW)); // Grigio scuro // draw darkline of left-top conner hOldPen = (HPEN)SelectObject(hDC,penBtnShadow); MoveToEx(hDC,itemRect.left, itemRect.bottom-1,NULL); LineTo(hDC,itemRect.left, itemRect.top); LineTo(hDC,itemRect.right, itemRect.top); // draw hilight line of right-bottom conner SelectObject(hDC,penBtnHiLight); MoveToEx(hDC,itemRect.left, itemRect.bottom-1,NULL); LineTo(hDC,itemRect.right-1, itemRect.bottom-1); LineTo(hDC,itemRect.right-1, itemRect.top-1); //release resource SelectObject(hDC,hOldPen); DeleteObject(penBtnShadow); DeleteObject(penBtnHiLight); } else // ...else draw non pressed button { if((m_bIsFlat == 0) || (m_bIsFlat == 1 && m_MouseOnButton == 1)) { HPEN pen3DLight = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_3DHILIGHT));//COLOR_3DLIGHT)); // Light gray HPEN penBtnShadow = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_3DSHADOW)); // Dark gray // White line hOldPen = (HPEN)SelectObject(hDC,pen3DLight); MoveToEx(hDC,itemRect.left, itemRect.bottom-1,NULL); LineTo(hDC,itemRect.left, itemRect.top); LineTo(hDC,itemRect.right, itemRect.top); // Dark gray line SelectObject(hDC,penBtnShadow); MoveToEx(hDC,itemRect.left, itemRect.bottom-1,NULL); LineT