/// <summary>
/// The hook procedure for window messages generated by the FileOpenDialog
/// </summary>
/// <param name="hWnd">the handle of the window at which this message is targeted</param>
/// <param name="msg">the message identifier</param>
/// <param name="wParam">message-specific parameter data</param>
/// <param name="lParam">mess-specific parameter data</param>
/// <returns></returns>
public IntPtr MyHookProc(IntPtr hWnd, UInt16 msg, Int32 wParam, Int32 lParam)
{
if (hWnd == IntPtr.Zero)
{
return(IntPtr.Zero);
}
// Behaviour is dependant on the message received
switch (msg)
{
// We're not interested in every possible message; just return a NULL for those we don't care about
default:
{
return(IntPtr.Zero);
}
// WM_INITDIALOG - at this point the OpenFileDialog exists, so we pull the user-supplied control
// into the FileOpenDialog now, using the SetParent API.
case WindowMessage.InitDialog:
{
IntPtr hWndParent = NativeMethods.GetParent(hWnd);
NativeMethods.SetParent(_userControl.Handle, hWndParent);
return(IntPtr.Zero);
}
// WM_SIZE - the OpenFileDialog has been resized, so we'll resize the content and user-supplied
// panel to fit nicely
case WindowMessage.Size:
{
FindAndResizePanels(hWnd);
return(IntPtr.Zero);
}
// WM_NOTIFY - we're only interested in the CDN_SELCHANGE notification message:
// we grab the currently-selected filename and fire our event
case WindowMessage.Notify:
{
IntPtr ipNotify = new IntPtr(lParam);
OfNotify ofNot = (OfNotify)Marshal.PtrToStructure(ipNotify, typeof(OfNotify));
UInt16 code = ofNot.hdr.code;
if (code == CommonDlgNotification.SelChange)
{
// This is the first time we can rely on the presence of the content panel
// Resize the content and user-supplied panels to fit nicely
FindAndResizePanels(hWnd);
// get the newly-selected path
IntPtr hWndParent = NativeMethods.GetParent(hWnd);
StringBuilder pathBuffer = new StringBuilder(_MAX_PATH);
UInt32 ret = NativeMethods.SendMessage(hWndParent, CommonDlgMessage.GetFilePath, _MAX_PATH, pathBuffer);
string path = pathBuffer.ToString();
// copy the string into the path buffer
UnicodeEncoding ue = new UnicodeEncoding();
byte[] pathBytes = ue.GetBytes(path);
Marshal.Copy(pathBytes, 0, _fileNameBuffer, pathBytes.Length);
// fire selection-changed event
SelectionChanged?.Invoke(path);
}
return(IntPtr.Zero);
}
}
}
/// <summary>
/// The hook procedure for window messages generated by the FileOpenDialog
/// </summary>
/// <param name="hWnd">the handle of the window at which this message is targeted</param>
/// <param name="msg">the message identifier</param>
/// <param name="wParam">message-specific parameter data</param>
/// <param name="lParam">mess-specific parameter data</param>
/// <returns></returns>
public IntPtr MyHookProc(IntPtr hWnd, UInt32 msg, Int32 wParam, Int32 lParam)
{
try
{
if (hWnd == IntPtr.Zero)
{
return(IntPtr.Zero);
}
switch (msg)
{
// We're not interested in every possible message; just return a NULL for those we don't care about
default:
{
return(IntPtr.Zero);
}
// WM_INITDIALOG - at this point the OpenFileDialog exists, so we pull the user-supplied control
// into the FileOpenDialog now, using the SetParent API.
case WM.INITDIALOG:
{
_hWndParent = User32.GetParent(hWnd);
//setting a bool for whether the OS is RTL (not the installed language of WLW)
IsRTL = (User32.GetWindowLong(_hWndParent, User32.GWL_EXSTYLE) & User32.WS_EX_LAYOUTRTL) > 0;
//account for large title bar, borders for adjusting control locations
TITLEBARINFO titleBarInfo = new TITLEBARINFO();
titleBarInfo.cbSize = (uint)Marshal.SizeOf(titleBarInfo);
if (!User32.GetTitleBarInfo(_hWndParent, ref titleBarInfo))
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
WINDOWINFO info = new WINDOWINFO();
info.cbSize = (uint)Marshal.SizeOf(info);
if (!User32.GetWindowInfo(_hWndParent, ref info))
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
_extraWindowHeight = (titleBarInfo.rcTitleBar.bottom - titleBarInfo.rcTitleBar.top) + 2 * (int)info.cyWindowBorders;
_extraWindowWidth = 2 * (int)info.cxWindowBorders;
Rectangle rcClient = new Rectangle(0, 0, 0, 0);
// Get client rectangle of dialog
RECT rcTemp = new RECT();
User32.GetWindowRect(_hWndParent, ref rcTemp);
rcClient.X = rcTemp.left;
rcClient.Y = rcTemp.top;
rcClient.Width = rcTemp.Width;
rcClient.Height = rcTemp.Height + TABS_HEIGHT + BUTTONS_HEIGHT;
//make the dialog box bigger
User32.MoveWindow(_hWndParent, rcClient.Left, rcClient.Top, rcClient.Width, rcClient.Height, true);
//move all the controls down
AdjustControlLocations();
//top tab control
mainTabControl = new LightweightControlContainerControl();
User32.SetParent(mainTabControl.Handle, _hWndParent);
mainTabControl.Location = new Point(0, 0);
mainTabControl.Anchor = AnchorStyles.Left | AnchorStyles.Right;
mainTabControl.Size = new Size(rcClient.Width, TABS_HEIGHT);
tabs = new TabLightweightControl();
tabs.ColorizeBorder = false;
tabs.VirtualBounds = new Rectangle(0, 0, rcClient.Width, TABS_HEIGHT);
tabs.LightweightControlContainerControl = mainTabControl;
tabs.DrawSideAndBottomTabPageBorders = false;
InsertImageTabControl tabFromFile = new InsertImageTabControl();
tabFromFile.TabText = Res.Get(StringId.InsertImageInsertFromFile);
tabFromFile.TabBitmap = ResourceHelper.LoadAssemblyResourceBitmap("ImageInsertion.Images.TabInsertFromFile.png");
tabFromFile.BackColor = SystemColors.Control;
User32.SetParent(tabFromFile.Handle, _hWndParent);
tabs.SetTab(0, tabFromFile);
mainTabControl.BackColor = tabFromFile.ApplicationStyle.InactiveTabTopColor;
//now, add tabs for the other controls
int i = 1;
foreach (InsertImageSource imageSource in imageSources)
{
InsertImageTabControl tab = new InsertImageTabControl();
tab.TabText = imageSource.TabName;
tab.TabBitmap = imageSource.TabBitmap;
tab.BackColor = SystemColors.Control;
tabs.SetTab(i++, tab);
}
tabs.SelectedTabNumberChanged += new EventHandler(tabs_SelectedTabNumberChanged);
//set the keyboard hook for tab switching
tabKeyboardHook = new TabbingHookProc(tabs);
tabKeyboardHook.Install(_hWndParent);
//add other image source panels
_panelImage = new Panel();
_panelImage.Location = new Point(0, mainTabControl.Size.Height);
_panelImage.BorderStyle = BorderStyle.None;
_panelImage.Anchor = AnchorStyles.Left | AnchorStyles.Right | AnchorStyles.Top | AnchorStyles.Bottom;
_panelImage.Size = new Size(rcClient.Width, rcClient.Height - TABS_HEIGHT - BUTTONS_HEIGHT - _extraWindowHeight);
_panelImage.Visible = false;
User32.SetParent(_panelImage.Handle, _hWndParent);
//initalize the other sources
foreach (InsertImageSource source in imageSources)
{
source.Init(_panelImage.Width, _panelImage.Height);
Control c = source.ImageSelectionControls;
DisplayHelper.Scale(c);
foreach (Control childControl in c.Controls)
{
DisplayHelper.Scale(childControl);
}
}
DisplayHelper.Scale(_panelImage);
//special cancel button
_buttonPanel = new Panel();
_buttonPanel.Location = new Point(rcClient.Width - (int)(0.5 * _extraWindowWidth) - _buttonPanel.Width, _panelImage.Bounds.Bottom);
_buttonPanel.Size = new Size(75, 23);
_buttonPanel.BorderStyle = BorderStyle.None;
_cancelButton = new Button();
_cancelButton.TextAlign = ContentAlignment.MiddleCenter;
if (BidiHelper.IsRightToLeft)
{
_cancelButton.RightToLeft = RightToLeft.Yes;
}
_cancelButton.Text = Res.Get(StringId.CancelButton);
_cancelButton.FlatStyle = FlatStyle.System;
_cancelButton.Location = new Point(0, 0);
_cancelButton.Size = new Size(75, 23);
_cancelButton.Click += new EventHandler(_cancelButton_Click);
_buttonPanel.Controls.Add(_cancelButton);
User32.SetParent(_buttonPanel.Handle, _hWndParent);
int origWidth = _cancelButton.Width;
string tmp = _cancelButton.Text;
_cancelButton.Text = Res.Get(StringId.InsertImageButton);
int newWidth = Math.Max(origWidth, DisplayHelper.MeasureButton(_cancelButton));
_cancelButton.Text = tmp;
newWidth = Math.Max(newWidth, DisplayHelper.MeasureButton(_cancelButton));
_buttonPanel.Width = _cancelButton.Width = newWidth;
int deltaX = newWidth - origWidth;
_buttonPanel.Left -= deltaX;
//fixing up button text and tab order
IntPtr hWndOpenButton = User32.GetDlgItem(_hWndParent, _OPEN_BUTTON_ID);
User32.SetWindowText(hWndOpenButton, Res.Get(StringId.InsertImageButton));
mainTabControl.InitFocusManager();
mainTabControl.AddFocusableControls(tabs.GetAccessibleControls());
foreach (InsertImageSource tabPage in imageSources)
{
mainTabControl.AddFocusableControl(tabPage.ImageSelectionControls);
}
state = STATE.FILE;
return(IntPtr.Zero);
}
case WM.SIZE:
{
ManipulatePanels();
return(IntPtr.Zero);
}
// WM_NOTIFY - we're only interested in the CDN_SELCHANGE notification message:
// we grab the currently-selected filename and copy it into the buffer
case WM.NOTIFY:
{
IntPtr ipNotify = new IntPtr(lParam);
OfNotify ofNot = (OfNotify)Marshal.PtrToStructure(ipNotify, typeof(OfNotify));
Int16 code = (short)ofNot.hdr.code;
if (code == CommonDlgNotification.SelChange)
{
UpdateChosenImage(false);
//CheckOptions(false);
}
else if (code == CommonDlgNotification.InitDone)
{
listener = new CommandListener(_hWndParent, this, (int)User32.GetDlgCtrlID(_cancelButton.Handle));
}
else if (code == CommonDlgNotification.FileOk)
{
// update the image path (need to do this if the user selected
// a file by simpliy typing in the filepath text box)
UpdateChosenImage(true);
// ok to insert
_insertFile = true;
}
else if ((code == CommonDlgNotification.FolderChange) && (state == STATE.WEB))
{
// If the user hits the OK button while there is no valid selection
// within the File panel, the file dialog sends a CommonDlgNotification.FolderChange
// We use this combined with other relevant state to trigger the closing
// of the Image dialog
HitOpen();
}
return(IntPtr.Zero);
}
}
}
catch (Exception ex)
{
UnexpectedErrorMessage.Show(ex);
return(new IntPtr(1));
}
finally
{
GC.KeepAlive(this);
}
}
