button.zip_按钮图片改变

// XSPngButton.cpp : 实现文件 // #include "stdafx.h" #include "XSPngButton.h" #include "classInternetManager.h" // CXSPngButton IMPLEMENT_DYNAMIC(CXSPngButton, CButton) CXSPngButton::CXSPngButton() { m_bTracked = false; m_pImage = NULL; m_nState = CTRL_NOFOCUS; m_nBtnType = BTN_TYPE_NORMAL; m_bIsMouseHover = false; } CXSPngButton::CXSPngButton(int nItem, int nSubItem, CRect rect, HWND hParent) { m_inItem = nItem; m_inSubItem = nSubItem; m_rect = rect; m_hParent = hParent; bEnable = TRUE; } CXSPngButton::~CXSPngButton() { if(m_pImage == NULL) { delete m_pImage; m_pImage = NULL; } } void CXSPngButton::InitButton(UINT nImage, UINT nBtnType /* = BTN_TYPE_NORMAL */) { m_nBtnType = nBtnType; m_pImage = LoadImageFromResource(AfxGetResourceHandle(), nImage, L"PNG"); if (m_pImage == NULL) return; } void CXSPngButton::InitButton(UINT nNormalImageID,UINT nHoverImageID,UINT nClickedImageID,UINT nBtnType /*= BTN_TYPE_NORMAL*/) { m_nBtnType = nBtnType; m_pImage = LoadImageFromResource(AfxGetResourceHandle(), nNormalImageID, L"PNG"); m_pHoverImage = LoadImageFromResource(AfxGetResourceHandle(), nHoverImageID, L"PNG"); if (m_pImage == NULL ||m_pHoverImage == NULL) return; } BEGIN_MESSAGE_MAP(CXSPngButton, CButton) ON_WM_ERASEBKGND() ON_WM_PAINT() ON_WM_MOUSEMOVE() ON_WM_LBUTTONDOWN() ON_WM_LBUTTONUP() ON_CONTROL_REFLECT(BN_CLICKED, &CXSPngButton::OnBnClicked) ON_MESSAGE(WM_MOUSEHOVER,OnMouseHOver) ON_MESSAGE(WM_MOUSELEAVE,OnMouseLeave) END_MESSAGE_MAP() BOOL CXSPngButton::OnEraseBkgnd(CDC* pDC) { return TRUE; } void CXSPngButton::OnPaint() { CButton::OnPaint(); } // CXSPngButton 消息处理程序 void CXSPngButton::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct) { if (!IsWindowEnabled()) m_nState = CTRL_DISABLE; CDC dc; dc.Attach(lpDrawItemStruct->hDC); SetBkMode(lpDrawItemStruct->hDC,TRANSPARENT); if(m_bIsMouseHover) DrawButtonImage(&dc, m_pHoverImage,m_nState); else DrawButtonImage(&dc, m_pImage,m_nState); } bool CXSPngButton::DrawButtonImage(CDC* pDC, Image* pImage, UINT nState) { bool result = false; if (pImage == NULL) return result; CRect rcButton; rcButton = CRect(0, 0, pImage->GetWidth(), pImage->GetHeight()); Graphics graph(pDC->GetSafeHdc()); graph.SetSmoothingMode(SmoothingMode::SmoothingModeHighQuality); graph.DrawImage(pImage, 0, 0, rcButton.left, rcButton.top, rcButton.Width(), rcButton.Height(), UnitPixel); graph.ReleaseHDC(pDC->GetSafeHdc()); result = true; return result; } Image *CXSPngButton::LoadImageFromResource(HINSTANCE hInstance, UINT uImgID, LPCTSTR lpType) { HRSRC hResInfo = ::FindResource(hInstance, MAKEINTRESOURCE(uImgID), lpType); if (hResInfo == NULL) return NULL; //fail DWORD dwSize; dwSize = SizeofResource(hInstance, hResInfo); //get resource size(bytes) HGLOBAL hResData; hResData = ::LoadResource(hInstance, hResInfo); if (hResData == NULL) return NULL; //fail HGLOBAL hMem; hMem = ::GlobalAlloc(GMEM_MOVEABLE, dwSize); if (hMem == NULL){ ::FreeResource(hResData); return NULL; } LPVOID lpResData, lpMem; lpResData = ::LockResource(hResData); lpMem = ::GlobalLock(hMem); ::CopyMemory(lpMem, lpResData, dwSize); //copy memory ::GlobalUnlock(hMem); ::FreeResource(hResData); //free memory IStream *pStream; HRESULT hr; hr = ::CreateStreamOnHGlobal(hMem, TRUE, &pStream);//create stream object Image *pImage = NULL; if (SUCCEEDED(hr)){ pImage = Image::FromStream(pStream);//get GDI+ pointer pStream->Release(); } ::GlobalFree(hMem); return pImage; } void CXSPngButton::PreSubclassWindow() { ModifyStyle(0, BS_OWNERDRAW); if (NULL != GetSafeHwnd()) { if (!(GetButtonStyle() & WS_CLIPSIBLINGS)) SetWindowLong(GetSafeHwnd(), GWL_STYLE, GetWindowLong(GetSafeHwnd(), GWL_STYLE) | WS_CLIPSIBLINGS); } CButton::PreSubclassWindow(); } void CXSPngButton::OnLButtonDown(UINT nFlags, CPoint point) { if (m_nState != CTRL_FOCUS) m_nState = CTRL_FOCUS; PaintParent(); CButton::OnLButtonDown(nFlags, point); } void CXSPngButton::OnLButtonUp(UINT nFlags, CPoint point) { if (m_nState != CTRL_FOCUS) { m_nState = CTRL_FOCUS; PaintParent(); } CButton::OnLButtonUp(nFlags, point); } void CXSPngButton::OnMouseMove(UINT nFlags, CPoint point) { // TODO: 在此添加消息处理程序代码和/或调用默认值 if(!m_bTracked) { TRACKMOUSEEVENT tme; ZeroMemory(&tme,sizeof(TRACKMOUSEEVENT )); tme.cbSize = sizeof(TRACKMOUSEEVENT ); tme.dwFlags = TME_HOVER|TME_LEAVE; tme.dwHoverTime = 1; tme.hwndTrack = this->GetSafeHwnd(); if(::_TrackMouseEvent(&tme)) { m_bTracked = true; m_bIsMouseHover = true; } } //RedrawWindow(NULL,NULL,RDW_FRAME|RDW_INVALIDATE|RDW_ERASE|RDW_ERASENOW); CButton::OnMouseMove(nFlags, point); } LRESULT CXSPngButton::OnMouseHOver(WPARAM wParam,LPARAM lParam) { //鼠标放上去 m_bIsMouseHover = true; if(m_nState != CTRL_FOCUS) { m_nState = CTRL_FOCUS; PaintParent(); } //RedrawWindow(NULL,NULL,RDW_FRAME|RDW_INVALIDATE|RDW_ERASE|RDW_ERASENOW); return 0; } LRESULT CXSPngButton::OnMouseLeave(WPARAM wParam,LPARAM lParam) { //鼠标移开时 m_bTracked=false; m_bIsMouseHover = false; if (m_nBtnType == BTN_TYPE_NORMAL) m_nState = CTRL_NOFOCUS; PaintParent(); //RedrawWindow(NULL,NULL,RDW_FRAME|RDW_INVALIDATE|RDW_ERASE|RDW_ERASENOW); return 0; } void CXSPngButton::PaintParent() { CRect rect; GetWindowRect(&rect); GetParent()-> ScreenToClient(&rect); GetParent()-> InvalidateRect(&rect); } void CXSPngButton::OnBnClicked() { AfxMessageBox(TEXT("妈蛋，谁让你点我的！")); //CButton::OnBnClicked(); }