/// <summary>
/// Attempts to retreive a character position relative to the body
/// content based on the character index.
/// </summary>
/// <param name="charindex"></param>
/// <returns>Left and top coordinates of the character or -1,-1</returns>
public tagPOINT GetPosFromCharIndex(int charindex)
{
IMarkupPointer impStart;
IDisplayPointer idpCur;
tagPOINT point = new tagPOINT();
point.X = -1;
point.Y = -1;
if (m_pDoc2 == null)
return point;
if (m_pDisplayServices == null)
return point;
IHTMLElement elem = m_pDoc2.body;
if (elem == null)
return point;
//Setup markup pointer
m_pMarkupServices.CreateMarkupPointer(out impStart);
//Position the markup pointer after beginning of the body tag
impStart.MoveAdjacentToElement(elem, (int)ELEMENT_ADJACENCY.ELEM_ADJ_AfterBegin);
// Create a display pointer from the markup pointer
m_pDisplayServices.CreateDisplayPointer(out idpCur);
//Move markup pointer accoring to charindex value
for (int i = 0; i < charindex; i++)
{
impStart.MoveUnit((int)MOVEUNIT_ACTION.MOVEUNIT_NEXTCHAR);
}
//Move current display pointer to the beginning of target char
idpCur.MoveToMarkupPointer(impStart, null);
ILineInfo info = null;
idpCur.GetLineInfo(out info);
if (info != null)
{
point.X = info.x;
point.Y = info.baseLine;
}
return point;
}
public static extern int MapWindowPoints(IntPtr hWndFrom, IntPtr hWndTo,
[In, Out] tagPOINT pt, int cPoints);
/// <summary>
/// Attempts to retreive Caret position
/// </summary>
/// <returns></returns>
public tagPOINT GetCaretPosition()
{
IHTMLCaret pcaret = null;
tagPOINT point = new tagPOINT();
point.X = -1;
point.Y = -1;
if (m_pDisplayServices == null)
return point;
m_pDisplayServices.GetCaret(out pcaret);
if (pcaret != null)
{
//get the current caret position so we can reset it later
pcaret.GetLocation(out point, true);
//pcaret.MoveDisplayPointerToCaret(idpOriginal);
//Hide caret
//pcaret.Hide();
//Moves Caret to a given displaypointer
//pcaret.MoveCaretToPointer(idpCur, false, 1);
}
return point;
}
int IfacesEnumsStructsClasses.IDropTarget.Drop(System.Runtime.InteropServices.ComTypes.IDataObject pDataObj, uint grfKeyState, tagPOINT pt, ref uint pdwEffect)
{
if (pDataObj == null)
return Hresults.S_OK;
if (WBDragDrop != null)
{
DataObject obja = new DataObject(pDataObj);
Point ppt = new Point(pt.X, pt.Y);
WBDropEvent.SetParameters(grfKeyState, ppt, obja, pdwEffect);
WBDragDrop(this, WBDropEvent);
if (WBDropEvent.handled == true)
pdwEffect = (uint)WBDropEvent.dropeffect;
}
return Hresults.S_OK;
}
public static extern IntPtr SendMessage(HandleRef hWnd, uint msg,
IntPtr wParam, ref tagPOINT lParam);
int IfacesEnumsStructsClasses.IDropTarget.DragOver(uint grfKeyState, tagPOINT pt, ref uint pdwEffect)
{
if (WBDragOver != null)
{
Point ppt = new Point(pt.X, pt.Y);
WBDragOverEvent.SetParameters(grfKeyState, ppt, pdwEffect);
WBDragOver(this, WBDragOverEvent);
if (WBDragOverEvent.handled == true)
pdwEffect = (uint)WBDragOverEvent.dropeffect;
}
return Hresults.S_OK;
}
int IDocHostUIHandler.ShowContextMenu(uint dwID, ref tagPOINT pt, object pcmdtReserved, object pdispReserved)
{
// return Hresults.S_OK; //Do not display context menu
// return Hresults.S_FALSE; //Default IE ctxmnu
Point outpt = new Point(pt.X, pt.Y);
//Raise event
if (WBContextMenu != null)
{
ContextMenuEvent.SetParameters((WB_CONTEXTMENU_TYPES)dwID, outpt, pdispReserved);
WBContextMenu(this, ContextMenuEvent);
if (ContextMenuEvent.displaydefault == false) //Handled or don't display
return Hresults.S_OK;
ContextMenuEvent.dispctxmenuobj = null;
}
return Hresults.S_FALSE;
}
int IDocHostShowUI.ShowHelp(IntPtr hwnd, string pszHelpFile, uint uCommand, uint dwData, tagPOINT ptMouse, object pDispatchObjectHit)
{
return Hresults.E_NOTIMPL;
}
public static extern IntPtr SendMessage(HandleRef hWnd, uint msg,
IntPtr wParam, ref tagPOINT lParam);
int IDocHostUIHandler.ShowContextMenu(uint dwID, ref tagPOINT pt, object pcmdtReserved, object pdispReserved)
{
// return Hresults.S_OK; //Do not display context menu
// return Hresults.S_FALSE; //Default IE ctxmnu
//Raise event
if (WBContextMenu != null)
{
//Screen coordinates
Point outpt = new Point(pt.X, pt.Y);
//Client coordinates
Point clientpt = this.PointToClient(outpt);
IHTMLElement elem = this.ElementFromPoint(clientpt.X, clientpt.Y);
ContextMenuEvent.SetParameters((WB_CONTEXTMENU_TYPES)dwID, outpt, clientpt, elem, elem );
WBContextMenu(this, ContextMenuEvent);
if (ContextMenuEvent.displaydefault == false) //Handled or don't display
return Hresults.S_OK;
ContextMenuEvent.dispctxmenuobj = null;
ContextMenuEvent.ctxmenuelem = null;
}
return Hresults.S_FALSE;
}