public void SelectPoint()
{
selectpointstate = SELECT_POINT_STATES.SPS_SELECT;
}
protected override IntPtr WndProc(IntPtr handle, int message, IntPtr wparam, IntPtr lparam, ref bool handled)
{
try
{
switch (message)
{
case WM_PAINT:
{
Paint paint;
BeginPaint(handle, out paint);
scene.Draw(); // Перерисовка содержимого
EndPaint(handle, ref paint);
handled = true;
}
break;
case WM_SIZE:
scene.Resize(handle); // Обработка изменения размеров
handled = true;
break;
case WM_LBUTTONUP:
{
int x = (int)lparam;
// выбор линии
if (selectpolystate)
{
selectpolystate = false;
scene.ChangePoly(x & 0xffff, x >> 16);
InvalidateRect(handle, (IntPtr)0, 1);
RestorePolyColor();
}
else
// выбор точки
if (selectpointstate == SELECT_POINT_STATES.SPS_SELECT)
{
selectpointstate = SELECT_POINT_STATES.SPS_MOVE;
scene.ChangePoint(x & 0xffff, x >> 16);
InvalidateRect(handle, (IntPtr)0, 1);
}
else
// перенос точки
if (selectpointstate == SELECT_POINT_STATES.SPS_MOVE)
{
selectpointstate = SELECT_POINT_STATES.SPS_NOP;
scene.ChangePoint(x & 0xffff, x >> 16);
InvalidateRect(handle, (IntPtr)0, 1);
}
// построение ломаной
else
{
scene.AddPoint(x & 0xffff, x >> 16);
InvalidateRect(handle, (IntPtr)0, 1);
}
}
break;
}
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
return(base.WndProc(handle, message, wparam, lparam, ref handled));
}
