广西工学院课程设计用纸
void CMFCView::OnDrawChange(WORD nID) { //选择绘画类型消息相应函数 m_DrawIndex = nID-IDM_DRAW_NOTHING; }
void CMFCView::OnUpdateOperDrawChange(CCmdUI * pCmdUI) {//选择绘画类型消息相应函数
pCmdUI->SetRadio(m_DrawIndex == (pCmdUI->m_nID - IDM_DRAW_NOTHING)); }
float CMFCView::GetDistance(CPoint start, CPoint end) {//得到两点之间线段的长度 float flRlt; flRlt=(float)((start.x-end.x)*(start.x-end.x)+(start.y-end.y)*(start.y-end.y)); flRlt=sqrt(flRlt); return flRlt; }
void CMFCView::DrawLine(CPoint start,CPoint end) {//画直线线函数 CClientDC dc(this); CPen pen(m_nLineStyle,m_nLineWidth,m_color); dc.SelectObject(&pen); dc.MoveTo(start); dc.LineTo(end); }
void CMFCView::DrawArrowLine(CPoint start, CPoint end) {//画有向箭头的函数 if(GetDistance(start,end) == 0) return; float flLength = 15; float flAngle = 100;//设置有向箭头的角度
float tmpX = (float)(end.x) + ((float)(start.x)-(float)(end.x))*flLength/GetDistance(start,end); float tmpY = (float)(end.y) + ((float)(start.y)-(float)(end.y))*flLength/GetDistance(start,end); float fl1X = (tmpX-(float)(end.x))*cos(-flAngle/2) - (tmpY-(float)(end.y))*sin(-flAngle/2) + (float)(end.x);
float fl1Y = (tmpY-(float)(end.y))*cos(-flAngle/2) + (tmpX-(float)(end.x))*sin(-flAngle/2) + (float)(end.y);
float fl2X = (tmpX-(float)(end.x))*cos(flAngle/2) - (tmpY-(float)(end.y))*sin(flAngle/2) + (float)(end.x);
float fl2Y = (tmpY-(float)(end.y))*cos(flAngle/2) + (tmpX-(float)(end.x))*sin(flAngle/2) + (float)(end.y); CClientDC dc(this);
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广西工学院课程设计用纸
CPen pen(m_nLineStyle,m_nLineWidth,m_color); dc.SelectObject(&pen); dc.MoveTo(start); dc.LineTo(end);
dc.MoveTo(end.x,end.y); dc.LineTo(fl1X,fl1Y);
dc.MoveTo(end.x,end.y); dc.LineTo(fl2X,fl2Y); dc.MoveTo(fl1X,fl1Y); dc.LineTo(fl2X,fl2Y); }
void CMFCView::DrawRect(CPoint start, CPoint end) {//画长方形函数 CClientDC dc(this); CPen pen(m_nLineStyle,m_nLineWidth,m_color); dc.SelectObject(&pen); CBrush *pBrush = CBrush::FromHandle((HBRUSH)GetStockObject(NULL_BRUSH)); CBrush *pOldBrush = dc.SelectObject(pBrush); dc.Rectangle(CRect(m_start,m_end)); dc.SelectObject(pOldBrush); }
void CMFCView::DrawCircle(CPoint start, CPoint& end) {//画圆函数 CClientDC dc(this); CPen pen(m_nLineStyle,m_nLineWidth,m_color); dc.SelectObject(&pen); CBrush *pBrush = CBrush::FromHandle((HBRUSH)GetStockObject(NULL_BRUSH)); int len,lenx,leny; lenx = end.x - start.x; leny = end.y - start.y; if(leny < lenx) len = leny; else len = lenx;
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广西工学院课程设计用纸
end.x = start.x + len; end.y = start.y + len; CBrush *pOldBrush = dc.SelectObject(pBrush); dc.Ellipse(CRect(m_start,end)); dc.SelectObject(pOldBrush); }
void CMFCView::DrawEllipse(CPoint start, CPoint end) {//画椭圆函数 CClientDC dc(this); CPen pen(m_nLineStyle,m_nLineWidth,m_color); dc.SelectObject(&pen); CBrush *pBrush = CBrush::FromHandle((HBRUSH)GetStockObject(NULL_BRUSH)); CBrush *pOldBrush = dc.SelectObject(pBrush); dc.Ellipse(CRect(m_start,end)); dc.SelectObject(pOldBrush); }
void CMFCView::OnEditUndo() {//点击“撤消”消息响应函数 int num = m_graph.GetSize(); if(m_graph.GetSize()!=0) { m_graph.RemoveAt(num-1); InvalidateRect(NULL,TRUE); num--; } else MessageBox(\没有图形供撤消!\}
void CMFCView::OnClear() {//点击“清空”消息响应函数 // TODO: Add your command handler code here int max = m_graph.GetSize(); for(int i=0;i
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广西工学院课程设计用纸
void CMFCView::OnSetLineStyleWidth() {//点击“设置线宽线形”消息响应函数 CSettingDlg dlg; dlg.m_nLineWidth = m_nLineWidth; dlg.m_nLineStyle=m_nLineStyle; dlg.m_color = m_color; if(IDOK==dlg.DoModal()) { m_nLineWidth = dlg.m_nLineWidth; m_nLineStyle = dlg.m_nLineStyle; } }
void CMFCView::OnSetColor() { //点击“设置颜色”消息响应函数 CColorDialog dlg; dlg.m_cc.Flags |= CC_RGBINIT | CC_FULLOPEN; dlg.m_cc.rgbResult=m_color; if(IDOK==dlg.DoModal()) { m_color=dlg.m_cc.rgbResult; } }
void CMFCView::OnSetFont()
{ //点击“设置字体”消息响应函数 CFontDialog dlg; if(IDOK==dlg.DoModal()) { if(m_font.m_hObject) m_font.DeleteObject(); m_font.CreateFontIndirect(dlg.m_cf.lpLogFont); m_strFontName=dlg.m_cf.lpLogFont->lfFaceName; Invalidate(); } }
void CMFCView::OnOpenTxt()
{//点击“打开文本文件”消息响应函数 CClientDC dc(this); CFileDialog fileDlg(TRUE); fileDlg.m_ofn.lpstrTitle=\我的文件打开对话框\ fileDlg.m_ofn.lpstrFilter=\
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广西工学院课程设计用纸
CRect Rect; GetClientRect(&Rect); if(IDOK==fileDlg.DoModal()) { m_txt = true; CFile file(fileDlg.GetFileName(),CFile::modeRead); DWORD dwFileLen; dwFileLen=file.GetLength(); pBuf=new char[dwFileLen+1]; pBuf[dwFileLen]=0; file.Read(pBuf,dwFileLen); file.Close(); InvalidateRect(NULL,TRUE); } }
void CMFCView::OnOpenBmp()
{//点击“打开bmp文件”消息响应函数 CClientDC dc(this); CFileDialog fileDlg(TRUE); fileDlg.m_ofn.lpstrTitle=\我的文件打开对话框\ fileDlg.m_ofn.lpstrFilter=\ if(IDOK!=fileDlg.DoModal()) return; m_bmp = true; CString StrFileName; StrFileName = fileDlg.GetPathName(); CFile MyFile; if(!MyFile.Open(StrFileName,CFile::modeRead|CFile::typeBinary)) return; if(MyFile.Read(&BmpHeader,sizeof(BmpHeader))!=sizeof(BmpHeader)) { MessageBox(\读位图文件头出现错误\ } if(BmpHeader.bfType != 0x4d42) { MessageBox(\不是位图文件!\ }
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