/// <summary>
/// Override F1 to prevent it from getting to MSHTML. Will fire the HelpRequested
/// event when the F1 key is pressed
/// </summary>
protected override IntPtr OnKeyHooked(int nCode, UIntPtr wParam, IntPtr lParam)
{
// only process HC_ACTION
if (nCode == HC.ACTION)
{
// We want one key event per key key-press. To do this we need to
// mask out key-down repeats and key-ups by making sure that bits 30
// and 31 of the lParam are NOT set. Bit 30 specifies the previous
// key state. The value is 1 if the key is down before the message is
// sent; it is 0 if the key is up. Bit 31 specifies the transition
// state. The value is 0 if the key is being pressed and 1 if it is
// being released. Therefore, we are only interested in key events
// where both bits are set to 0. To test for both of these bits being
// set to 0 we use the constant REDUNDANT_KEY_EVENT_MASK.
const uint REDUNDANT_KEY_EVENT_MASK = 0xC0000000;
if (((uint)lParam & REDUNDANT_KEY_EVENT_MASK) == 0)
{
// extract the keyCode and combine with modifier keys
Keys keyCombo =
((Keys)(int)wParam & Keys.KeyCode) | KeyboardHelper.GetModifierKeys();
if (_tabs.CheckForTabSwitch(keyCombo))
{
return(new IntPtr(1));
}
}
}
// key not handled by our hook, continue processing
return(CallNextHook(nCode, wParam, lParam));
}
public void ViewContent(Control parent, Point menuLocation, int alternativeLocation, IDisposable disposeWhenDone)
{
try
{
if (!WinInet.InternetConnectionAvailable)
{
disposeWhenDone.Dispose();
DisplayMessage.Show(MessageId.InternetConnectionWarning);
return;
}
// track resource that need to be disposed
_disposeWhenDone = disposeWhenDone;
using (new WaitCursor())
{
// if the user is holding the CTRL button down then invalidate the cache
bool forceResynchronize = (KeyboardHelper.GetModifierKeys() == Keys.Control);
// setup download options
int downloadOptions =
DLCTL.DLIMAGES |
DLCTL.NO_CLIENTPULL |
DLCTL.NO_BEHAVIORS |
DLCTL.NO_DLACTIVEXCTLS |
DLCTL.SILENT;
if (forceResynchronize)
{
downloadOptions |= DLCTL.RESYNCHRONIZE;
}
// determine cookies and/or network credentials
WinInetCredentialsContext credentialsContext = null;
try
{
credentialsContext = BlogClientHelper.GetCredentialsContext(_button.BlogId, _button.ContentUrl);
}
catch (BlogClientOperationCancelledException)
{
_disposeWhenDone.Dispose();
return;
}
// note that we have viewed the content
_button.RecordButtonClicked();
// create the form and position it
BrowserMiniForm form = new BrowserMiniForm(_button.ContentQueryUrl, downloadOptions, credentialsContext);
form.StartPosition = FormStartPosition.Manual;
form.Size = _button.ContentDisplaySize;
if (!Screen.FromPoint(menuLocation).Bounds.Contains(menuLocation.X + form.Width, menuLocation.Y))
{
menuLocation.X = alternativeLocation - form.Width;
}
form.Location = new Point(menuLocation.X + 1, menuLocation.Y);
// subscribe to close event for disposal
form.Closed += new EventHandler(form_Closed);
// float above parent if we have one
IMiniFormOwner miniFormOwner = parent.FindForm() as IMiniFormOwner;
if (miniFormOwner != null)
{
form.FloatAboveOwner(miniFormOwner);
}
// show the form
form.Show();
}
}
catch
{
disposeWhenDone.Dispose();
throw;
}
}