VC++利用png图片做底图的漂亮窗口

#include "stdafx.h" #include "MyButton.h" CMyButton::CMyButton() { m_pBtnUpBmp = m_pBtnDownBmp = m_pBtnHotBmp = m_pBtnDisableBmp = m_pBtnOnDisableBmp = NULL; m_MyBtnTxtAlign = MYBTNTXTALIGN_NONE; m_bHasLine = FALSE; m_ImageIndex = 0; m_bHot = m_bCheck = FALSE; m_BtnType = 0; m_ImageWidth = m_ImageHeight = 0; m_bPress = FALSE; m_sWindowText = ""; m_nSpaceBetween = 3; m_bIsLatin = FALSE; m_dwBKColor = RGB(194,194,194); m_bTextColorChange = TRUE; m_bUserForceTextColor=FALSE; m_iForceTextColor=TRUE; m_bSideLine = true; m_nFontSize = 14; m_strFont = "宋体"; m_colLineColor = RGB(10,10,10); m_nLineWidth = 1; } CMyButton::~CMyButton() { } BEGIN_MESSAGE_MAP(CMyButton, CButton) //{{AFX_MSG_MAP(CMyButton) ON_WM_MOUSEMOVE() ON_WM_LBUTTONUP() ON_WM_LBUTTONDOWN() ON_WM_ERASEBKGND() //}}AFX_MSG_MAP ON_WM_MOVE() END_MESSAGE_MAP() CBitmap* CMyButton::SetBtnUpBmp(CBitmap* pBtnUpBmp) { CBitmap *pRetBmp = m_pBtnUpBmp; m_pBtnUpBmp = pBtnUpBmp; return pRetBmp; } CBitmap* CMyButton::SetBtnDownBmp(CBitmap* pBtnDownBmp) { CBitmap *pRetBmp = m_pBtnDownBmp; m_pBtnDownBmp = pBtnDownBmp; return pRetBmp; } CBitmap* CMyButton::SetBtnHotBmp(CBitmap* pBtnHotBmp) { CBitmap *pRetBmp = m_pBtnHotBmp; m_pBtnHotBmp = pBtnHotBmp; return pRetBmp; } CBitmap* CMyButton::SetBtnDisableBmp(CBitmap* pBtnDisableBmp) { CBitmap *pRetBmp = m_pBtnDisableBmp; m_pBtnDisableBmp = pBtnDisableBmp; return pRetBmp; } CBitmap* CMyButton::SetBtnOnDisableBmp(CBitmap* pBtnOnDisableBmp) { CBitmap *pRetBmp = m_pBtnOnDisableBmp; m_pBtnOnDisableBmp = pBtnOnDisableBmp; return pRetBmp; } MYBTNTEXTALIGN CMyButton::SetBtnTextAlign(MYBTNTEXTALIGN MyBtnTextAlign) { MYBTNTEXTALIGN ret = m_MyBtnTxtAlign; m_MyBtnTxtAlign = MyBtnTextAlign; return ret; } void CMyButton::SetLineInf(COLORREF colLineColor, int nLineWidth) { m_colLineColor = colLineColor; m_nLineWidth = nLineWidth; } void CMyButton::SetBtnSideLine(bool EnableSide) { m_bSideLine = EnableSide; } void CMyButton::SetForceTextColor(int iTextColor,BOOL Enable) { m_iForceTextColor = iTextColor; m_bUserForceTextColor = Enable; } void CMyButton::DrawItem( LPDRAWITEMSTRUCT lpDrawItemStruct ) { ASSERT(lpDrawItemStruct->CtlType == ODT_BUTTON); CDC *pDC = CDC::FromHandle(lpDrawItemStruct->hDC); CRect rect = lpDrawItemStruct->rcItem; double ratio = 1; int X = (rect.left + rect.right)/2 - m_ImageWidth/2; int Y = rect.top; CDC memdc; memdc.CreateCompatibleDC(pDC); CString str; GetWindowText(str); if(str!=m_sWindowText) { pDC->FillSolidRect(rect,m_dwBKColor); m_sWindowText = str; m_bIsLatin = TextIsLatin(str); } if(lpDrawItemStruct->itemState & ODS_DISABLED)//1 { if(m_BtnType == 0 || !m_bCheck) { if(m_pBtnDisableBmp != NULL) memdc.SelectObject(m_pBtnDisableBmp); else memdc.SelectObject(m_pBtnUpBmp); } else { if(m_pBtnOnDisableBmp != NULL) memdc.SelectObject(m_pBtnOnDisableBmp); else memdc.SelectObject(m_pBtnUpBmp); } } else if(lpDrawItemStruct->itemState & ODS_SELECTED//2 ||(m_bHot && m_bPress) || m_bCheck) { if(m_pBtnDownBmp != NULL) memdc.SelectObject(m_pBtnDownBmp); else memdc.SelectObject(m_pBtnUpBmp); } else if(m_bHot) { if(m_pBtnHotBmp != NULL) memdc.SelectObject(m_pBtnHotBmp); else memdc.SelectObject(m_pBtnUpBmp); } else memdc.SelectObject(m_pBtnUpBmp); if(m_MyBtnTxtAlign!=MYBTNTXTALIGN_NONE && m_MyBtnTxtAlign!=MYBTNTXTALIGN_CENTER && MYBTNTXTALIGN_STREN != m_MyBtnTxtAlign) { if (X>=0) { pDC->BitBlt(X,Y,m_ImageWidth,m_ImageHeight,&memdc,m_ImageIndex * m_ImageWidth,0,SRCCOPY); } else { ratio = m_ImageWidth*1.0/(lpDrawItemStruct->rcItem.right- lpDrawItemStruct->rcItem.left); pDC->SetStretchBltMode(HALFTONE); pDC->StretchBlt(0,Y,lpDrawItemStruct->rcItem.right - lpDrawItemStruct->rcItem.left, (int)(m_ImageHeight/ratio) ,&memdc, (m_ImageIndex * m_ImageWidth),0,m_ImageWidth,m_ImageHeight,SRCCOPY); } int nMode = pDC->SetBkMode(TRANSPARENT); COLORREF clr; if(m_bUserForceTextColor) { clr = pDC->SetTextColor((COLORREF)m_iForceTextColor); } else { if(m_bHot && (lpDrawItemStruct->itemState & ODS_DISABLED) == 0 && m_bTextColorChange) clr = pDC->SetTextColor(RGB(200,0,0)); else if((lpDrawItemStruct->itemState & ODS_DISABLED) != 0) clr = pDC->SetTextColor(RGB(80,80,80)); else clr = pDC->SetTextColor(RGB(0,0,0)); } int nSpace = -1; int nLastSpace = -1; int nLength = str.GetLength(); switch(m_MyBtnTxtAlign) { case MYBTNTXTALIGN_TOP: rect.bottom = rect.bottom - m_ImageHeight - m_nSpaceBetween; pDC->DrawText(str,rect,DT_CENTER | DT_VCENTER | DT_SINGLELINE); rect.top = rect.bottom + 2; rect.bottom = lpDrawItemStruct->rcItem.bottom; break; case MYBTNTXTALIGN_BOTTOM: { TEXTMETRIC tm; pDC->GetTextMetrics(&tm); int iHeight = tm.tmHeight + tm.tmExternalLeading+4; rect.top = rect.bottom- iHeight; pDC->DrawText(str,rect,DT_CENTER | DT_VCENTER | DT_SINGLELINE); rect.bottom = rect.top - 2; rect.top = lpDrawItemStruct->rcItem.top; break; } case MYBTNTXTALIGN_BOTTOM_PRO: rect.top = rect.top + (int)((m_ImageHeight + m_nSpaceBetween)/ratio); if(m_bIsLatin) { CRect rectCal=rect; str.TrimLeft(); str.TrimRight(); pDC->DrawText(str,rectCal,DT_CALCRECT); if(rectCal.right>rect.right) { CString str1 = _T(""); nSpace = str.Find(_T(' ')); if(nSpace>=0)//有空格 { int nSplit = nSpace; while(rectCal.right>rect.right) { str1 = str.Left(nSplit); str1.TrimLeft(); str1.TrimRight(); rectCal = rect; pDC->DrawText(str1,rectCal,DT_CALCRECT); nSplit--; } if(nSpace!=++nSplit)//第一个空格就超出范围 { str = str.Mid(nSplit); str.TrimLeft(); str.TrimRight(); } else { while(rectCal.right<=rect.right) { nLastSpace = nSpace; nSpace = str.Find(_T(' '),nSpace+1); if(nSpace>=0) { str1 = str.Left(nSpace); } else { str1 = str; } rectCal = rect; pDC->DrawText(str1,rectCal,DT_CALCRECT); } str1 = str.Left(nLastSpace); str1.TrimLeft(); str1.TrimRight(); str = str.Mid(nLastSpace); str.TrimLeft(); str.TrimRight(); } } else//没有空格 { int nSplit = str.GetLength(); while(rectCal.right>rect.right) { str1 = str.Left(nSplit); str1.TrimLeft(); str1.TrimRight(); rectCal = rect; pDC->DrawText(str1,rectCal,DT_CALCRECT); nSplit--; } str = str.Mid(++nSplit); str.TrimLeft(); str.TrimRight(); } rect.top-=9; pDC->DrawText(str1,rect,DT_CENTER); rect.top+=9; rectCal = rect; pDC->DrawText(str,rectCal,DT_CALCRECT); if(rectCal.right<=rect.right) pDC->DrawText(str,rect,DT_CENTER); else pDC->DrawText(str,rect,DT_LEFT); } else { rect.top-=3; rectCal = rect; pDC->DrawText(str,rectCal,DT_CALCRECT); if(rectCal.right<=rect.right) pDC->DrawText(str,rect,DT_CENTER); else pDC->DrawText(str,rect,DT_LEFT); rect.top+=3; } } else { pDC->DrawText(str,rect,DT_CENTER | DT_VCENTER | DT_SINGLELINE); } rect.bottom = rect.top - 2; rect.top = lpDrawItemStruct->rcItem.top; break; case MYBTNTXTALIGN_RIGHT: rect.left = rect.left + m_ImageWidth + m_nSpaceBetween; pDC->DrawText(str,rect,DT_CENTER | DT_VCENTER | DT_SINGLELINE); rect.right = rect.left - 2; r