void CScreenDevice::ClearLineEnd (void)
{
for (unsigned nPosX = m_nCursorX; nPosX < m_nWidth; nPosX += m_CharGen.GetCharWidth ())
{
EraseChar (nPosX, m_nCursorY);
}
}
bool cgUILineEdit::OnKeyDown( unsigned wparam, unsigned lparam )
{
switch(wparam)
{
case VK_BACK:
{
return EraseChar(m_nCursorPos);
}break;
case VK_DELETE:
{
return EraseChar(m_nCursorPos+1);
}break;
case VK_LEFT:
{
int nDestPos = m_nCursorPos-1;
if (GetKeyState(VK_CONTROL) < 0)
{
nDestPos = 0;
}
KeyMoveCursor(nDestPos);
}break;
case VK_RIGHT:
{
int nDestPos = m_nCursorPos+1;
if (GetKeyState(VK_CONTROL) < 0)
{
nDestPos = m_strText.length();
}
KeyMoveCursor(nDestPos);
}break;
case VK_HOME:
{
KeyMoveCursor(0);
}break;
case VK_END:
{
KeyMoveCursor(m_strText.length());
}break;
default:
break;
}
return false;
}
void CScreenDevice::EraseChars (unsigned nCount)
{
if (nCount == 0)
{
return;
}
unsigned nEndX = m_nCursorX + nCount * m_CharGen.GetCharWidth ();
if (nEndX > m_nWidth)
{
nEndX = m_nWidth;
}
for (unsigned nPosX = m_nCursorX; nPosX < nEndX; nPosX += m_CharGen.GetCharWidth ())
{
EraseChar (nPosX, m_nCursorY);
}
}
