maoyg wrote: > I have some questions about Undo which hover in my mind these days. I have > two rough ideas in mind... > > First idea: > I don't completely understand the specificaton on Undo. > I make some operations in normol mode,for example,I input some characters in > cell,or I change the column widths. > the undo remembers these operations. when I switch from normal mode to page > preview mode. > Should operations that are recorded in Undo list in normol mode be used in > page preview mode ? > on the contrary, > Should operations that are recorded in Undo list in page preview mode be used > in normol mode ? > e.g. I change the column widths in page preview mode. > My thought is that operations that are recorded in Undo list in normol mode > can't be used in page preview mode > or operations that are recorded in Undo list in page preview mode can't be > used in normol mode.
There's a single list of undo actions for the document, and only the last action can be undone. > Second idea: > I trace the code, debug the application, find it's difficult for me to > distingush the two mode accurrately. > I add > "SfxViewShell* pCur = SfxViewShell::Current(); > ScPreviewShell* pViewSh = PTR_CAST(ScPreviewShell,pCur); > SfxUndoManager* pUndoManager=pViewSh->GetUndoManager();" > to distingush the two mode in ScPreviewShell::ExecuteUndo(...), > But pUndoManager is null, I found pUndoMgr is null too in > SfxShell::GetUndoManager(), > the reason is when switching from normal mode to page preview mode, the > SfxUndoManager has been deconstructed. > Do you think whether I am in the right direction? The SfxUndoManager for the document isn't deleted. It's available from the DocShell. Niklas --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
