There are two more functions that can toggle keyboard state but each of them has some specific limitations like SendInput does. In this article, you will find all possible variants with their descriptions and limitations and a simple solution for toggling these keys avoiding compatibility problems.
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// ToggleKeysDoc.cpp : implementation of the CToggleKeysDoc class
//
#include "stdafx.h"
#include "ToggleKeys.h"
#include "ToggleKeysDoc.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CToggleKeysDoc
IMPLEMENT_DYNCREATE(CToggleKeysDoc, CDocument)
BEGIN_MESSAGE_MAP(CToggleKeysDoc, CDocument)
//{{AFX_MSG_MAP(CToggleKeysDoc)
// NOTE - the ClassWizard will add and remove mapping macros here.
// DO NOT EDIT what you see in these blocks of generated code!
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CToggleKeysDoc construction/destruction
CToggleKeysDoc::CToggleKeysDoc()
{
// TODO: add one-time construction code here
}
CToggleKeysDoc::~CToggleKeysDoc()
{
}
BOOL CToggleKeysDoc::OnNewDocument()
{
if (!CDocument::OnNewDocument())
return FALSE;
((CEditView*)m_viewList.GetHead())->SetWindowText(NULL);
// TODO: add reinitialization code here
// (SDI documents will reuse this document)
return TRUE;
}
/////////////////////////////////////////////////////////////////////////////
// CToggleKeysDoc serialization
void CToggleKeysDoc::Serialize(CArchive& ar)
{
// CEditView contains an edit control which handles all serialization
((CEditView*)m_viewList.GetHead())->SerializeRaw(ar);
}
/////////////////////////////////////////////////////////////////////////////
// CToggleKeysDoc diagnostics
#ifdef _DEBUG
void CToggleKeysDoc::AssertValid() const
{
CDocument::AssertValid();
}
void CToggleKeysDoc::Dump(CDumpContext& dc) const
{
CDocument::Dump(dc);
}
#endif //_DEBUG
/////////////////////////////////////////////////////////////////////////////
// CToggleKeysDoc commands
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