void CSketcherView::OnElementDelete()
{
if(m_pSelected)
{
CSketcherDoc* pDoc = GetDocument();// Get the document pointer
pDoc->DeleteElement(m_pSelected); // Delete the element
pDoc->UpdateAllViews(nullptr); // Redraw all the views
m_pSelected = nullptr; // Reset selected element ptr
}
}
void CSketcherView::OnLButtonDown(UINT nFlags, CPoint point)
{
CClientDC aDC(this); // Create a device context
OnPrepareDC(&aDC); // Get origin adjusted
aDC.DPtoLP(&point); // Convert point to logical coordinatesm_FirstPoint = point; // Record the cursor position
if(m_MoveMode)
{
// In moving mode, so drop the element
m_MoveMode = false; // Kill move mode
m_pSelected = nullptr; // De-select the element
GetDocument()->UpdateAllViews(0); // Redraw all the views
GetDocument()->SetModifiedFlag();
return;
}
CSketcherDoc* pDoc = GetDocument();// Get a document pointer
if(pDoc->GetElementType() == TEXT)
{
CTextDialog aDlg;
if(aDlg.DoModal() == IDOK)
{
// Exit OK so create a text element
CSize textExtent = aDC.GetTextExtent(aDlg.m_TextString);
CRect rect(point, textExtent); //Create enclosing rectangle
CText* pTextElement = new CText(
aDlg.m_TextString, rect, pDoc->GetElementColor());
// Add the element to the document
pDoc->AddElement(pTextElement);
// Get all views updated
pDoc->UpdateAllViews(nullptr, 0, pTextElement);
}
return;
}
m_FirstPoint = point; // Record the cursor position
SetCapture(); // Capture subsequent mouse messages
}