MFC界面美化之-按钮美化(重绘按钮)

// MyButton.cpp : 实现文件 // #include "pch.h" #include "MyButton.h" // CMyButton IMPLEMENT_DYNAMIC(CMyButton, CButton) CMyButton::CMyButton() { m_bIsInWnd = FALSE; } CMyButton::~CMyButton() { } BEGIN_MESSAGE_MAP(CMyButton, CButton) ON_WM_MOUSEMOVE() ON_WM_MOUSEHOVER() ON_WM_MOUSELEAVE() END_MESSAGE_MAP() // CMyButton 消息处理程序 //设置按钮图片路径 void CMyButton::SetImagePath(CString strNoramlImgPath, CString strPressImgPath, CString strFloatImgPath) { m_strNormalImgPath = strNoramlImgPath; m_strPressImgPath = strPressImgPath; m_strFloatImgPath = strFloatImgPath; } void CMyButton::SetBkImg(CString strBkImg) { if (strBkImg.IsEmpty()) return; m_BkImg.Load(strBkImg); } //初始化按钮，主要是调整按钮的位置，处理透明色 void CMyButton::ReleaseImg() { if (m_imgNormal) { m_imgNormal.Destroy(); } if (m_imgPress) { m_imgPress.Destroy(); } if (m_imgFloat) { m_imgFloat.Destroy(); } } bool CMyButton::InitMyButton(int nX/*左上角X坐标*/, int nY/*左上角Y坐标*/, int nW/*图像宽*/, int nH/*图像高*/, bool bIsPng/*是否是PNG图片*/) { HRESULT hr = 0; if (m_strNormalImgPath.IsEmpty()) return false; if (m_strPressImgPath.IsEmpty()) return false; if (m_strFloatImgPath.IsEmpty()) return false; hr = m_imgNormal.Load(m_strNormalImgPath); int a = GetLastError(); if (FAILED(hr)) return false; hr = m_imgPress.Load(m_strPressImgPath); if (FAILED(hr)) return false; hr = m_imgFloat.Load(m_strFloatImgPath); if (FAILED(hr)) return false; if (bIsPng) { if (m_imgNormal.GetBPP() == 32) { int i = 0; int j = 0; for (i = 0; i < m_imgNormal.GetWidth(); i++) { for (j = 0; j < m_imgNormal.GetHeight(); j++) { byte * pbyte = (byte *)m_imgNormal.GetPixelAddress(i, j); pbyte[0] = pbyte[0] * pbyte[3] / 255; pbyte[1] = pbyte[1] * pbyte[3] / 255; pbyte[2] = pbyte[2] * pbyte[3] / 255; } } } if (m_imgPress.GetBPP() == 32) { int i = 0; int j = 0; for (i = 0; i < m_imgPress.GetWidth(); i++) { for (j = 0; j < m_imgPress.GetHeight(); j++) { byte * pbyte = (byte *)m_imgPress.GetPixelAddress(i, j); pbyte[0] = pbyte[0] * pbyte[3] / 255; pbyte[1] = pbyte[1] * pbyte[3] / 255; pbyte[2] = pbyte[2] * pbyte[3] / 255; } } } if (m_imgFloat.GetBPP() == 32) { int i = 0; int j = 0; for (i = 0; i < m_imgFloat.GetWidth(); i++) { for (j = 0; j < m_imgFloat.GetHeight(); j++) { byte * pbyte = (byte *)m_imgFloat.GetPixelAddress(i, j); pbyte[0] = pbyte[0] * pbyte[3] / 255; pbyte[1] = pbyte[1] * pbyte[3] / 255; pbyte[2] = pbyte[2] * pbyte[3] / 255; } } } } MoveWindow(nX, nY, nW, nH); return true; } //自绘制函数 void CMyButton::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct) { if (!lpDrawItemStruct) return; HDC hMemDC; HBITMAP bmpMem; HGDIOBJ hOldObj; bmpMem = CreateCompatibleBitmap(lpDrawItemStruct->hDC, lpDrawItemStruct->rcItem.right - lpDrawItemStruct->rcItem.left, lpDrawItemStruct->rcItem.bottom - lpDrawItemStruct->rcItem.top); if (!bmpMem) return; hMemDC = CreateCompatibleDC(lpDrawItemStruct->hDC); if (!hMemDC) { if (bmpMem) { ::DeleteObject(bmpMem); bmpMem = NULL; } return; } hOldObj = ::SelectObject(hMemDC, bmpMem); int nW = lpDrawItemStruct->rcItem.right - lpDrawItemStruct->rcItem.left; int nH = lpDrawItemStruct->rcItem.bottom - lpDrawItemStruct->rcItem.top; RECT rectTmp = { 0 }; rectTmp = lpDrawItemStruct->rcItem; MapWindowPoints(GetParent(), &rectTmp); if (m_BkImg.IsNull() == false) m_BkImg.Draw(hMemDC, 0, 0, rectTmp.right - rectTmp.left, rectTmp.bottom - rectTmp.top, rectTmp.left, rectTmp.top, rectTmp.right - rectTmp.left, rectTmp.bottom - rectTmp.top); if (lpDrawItemStruct->itemState & ODS_SELECTED) { //按钮被选择 m_imgPress.AlphaBlend(hMemDC, 0, 0, nW, nH, 0, 0, nW, nH); } else { //默认状态 m_imgNormal.AlphaBlend(hMemDC, 0, 0, nW, nH, 0, 0, nW, nH); } ::BitBlt(lpDrawItemStruct->hDC, 0, 0, nW, nH, hMemDC,0,0,SRCCOPY); SelectObject(hMemDC, hOldObj); if (bmpMem) { ::DeleteObject(bmpMem); bmpMem = NULL; } if (hMemDC) { ::DeleteDC(hMemDC); hMemDC = NULL; } return; } void CMyButton::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 CButton::OnMouseMove(nFlags, point); if (!m_bIsInWnd) { TRACKMOUSEEVENT tme; tme.cbSize = sizeof(TRACKMOUSEEVENT); tme.dwFlags = TME_HOVER | TME_LEAVE; tme.dwHoverTime = 10; tme.hwndTrack = m_hWnd; _TrackMouseEvent(&tme); m_bIsInWnd = TRUE; } } void CMyButton::OnMouseHover(UINT nFlags, CPoint point) { // TODO: 在此添加消息处理程序代码和/或调用默认值 HDC hMemDC; HBITMAP bmpMem; HGDIOBJ hOldObj; HDC hDC = ::GetDC(GetSafeHwnd()); CRect rcItem; GetClientRect(&rcItem); if (hDC) { bmpMem = CreateCompatibleBitmap(hDC, rcItem.Width(), rcItem.Height()); if (!bmpMem) { ::ReleaseDC(GetSafeHwnd(), hDC); return; } hMemDC = CreateCompatibleDC(hDC); if (!hMemDC) { if (bmpMem) { ::DeleteObject(bmpMem); bmpMem = NULL; } ::ReleaseDC(GetSafeHwnd(), hDC); return; } hOldObj = ::SelectObject(hMemDC, bmpMem); RECT rectTmp = { 0 }; rectTmp = rcItem; MapWindowPoints(GetParent(), &rectTmp); if (m_BkImg.IsNull() == false) m_BkImg.Draw(hMemDC, 0, 0, rectTmp.right - rectTmp.left, rectTmp.bottom - rectTmp.top, rectTmp.left, rectTmp.top, rectTmp.right - rectTmp.left, rectTmp.bottom - rectTmp.top); int nW = rcItem.right - rcItem.left; int nH = rcItem.bottom - rcItem.top; m_imgFloat.AlphaBlend(hMemDC, 0, 0, nW, nH, 0, 0,nW,nH); ::BitBlt(hDC, 0, 0, nW, nH, hMemDC, 0, 0, SRCCOPY); SelectObject(hMemDC, hOldObj); if (bmpMem) { ::DeleteObject(bmpMem); bmpMem = NULL; } if (hMemDC) { ::DeleteDC(hMemDC); hMemDC = NULL; } ::ReleaseDC(GetSafeHwnd(), hDC); } CButton::OnMouseHover(nFlags, point); } void CMyButton::OnMouseLeave() { // TODO: 在此添加消息处理程序代码和/或调用默认值 CButton::OnMouseLeave(); InvalidateRect(NULL); m_bIsInWnd = FALSE; }