wxGridUpdateLocker Class Reference

#include </home/zeitlin/src/wx/github/interface/wx/grid.h>

---

Detailed Description

This small class can be used to prevent wxGrid from redrawing during its lifetime by calling wxGrid::BeginBatch() in its constructor and wxGrid::EndBatch() in its destructor.

It is typically used in a function performing several operations with a grid which would otherwise result in flicker. 以下に例を示します:

    void MyFrame::Foo()
    {
        m_grid = new wxGrid(this, ...);

        wxGridUpdateLocker noUpdates(m_grid);
        m_grid-AppendColumn();
        // ... many other operations with m_grid ...
        m_grid-AppendRow();

        // destructor called, grid refreshed
    }

Using this class is easier and safer than calling wxGrid::BeginBatch() and wxGrid::EndBatch() because you don't risk missing the call the latter (due to an exception for example).

Library:  wxAdvanced

Category:  Grid Related Classes

Public Member Functions
	wxGridUpdateLocker (wxGrid *grid=NULL)
	Creates an object preventing the updates of the specified grid.
	~wxGridUpdateLocker ()
	Destructor reenables updates for the grid this object is associated with.
void	Create (wxGrid *grid)
	This method can be called if the object had been constructed using the default constructor.

List of all members.

---

Constructor & Destructor Documentation

wxGridUpdateLocker::wxGridUpdateLocker

(

wxGrid *

grid = NULL

)

Creates an object preventing the updates of the specified grid.

The parameter could be NULL in which case nothing is done. If grid is non-NULL then the grid must exist for longer than this wxGridUpdateLocker object itself.

The default constructor could be followed by a call to Create() to set the grid object later.

wxGridUpdateLocker::~wxGridUpdateLocker

(

)

Destructor reenables updates for the grid this object is associated with.

---

Member Function Documentation

void wxGridUpdateLocker::Create

(

wxGrid *

grid

)

This method can be called if the object had been constructed using the default constructor.

It must not be called more than once.