示例#1
0
 protected override void WndProc(ref Message m)
 {
     switch (m.Msg)
     {
     case 0x000F://WM_PAINT
     if (parent.FullyCustomHeader)
     {
         Win32.RECT update = new Win32.RECT();
         if (Win32.GetUpdateRect(m.HWnd,ref update, false)==0)
             break;
         //Fill the paintstruct
         Win32.PAINTSTRUCT ps = new Win32.PAINTSTRUCT();
         IntPtr hdc = Win32.BeginPaint(m.HWnd, ref ps);
         //Create graphics object from the hdc
         Graphics g = Graphics.FromHdc(hdc);
         //Get the non-item rectangle
         int left = 0;
         Win32.RECT itemRect = new Win32.RECT();
         for (int i=0; i<parent.Columns.Count; i++)
         {
             //HDM_GETITEMRECT
             Win32.SendMessage(m.HWnd, 0x1200+7, i, ref itemRect);
             left += itemRect.right-itemRect.left;
         }
         parent.headerHeight = itemRect.bottom-itemRect.top;
         if (left >= ps.rcPaint.left)
             left = ps.rcPaint.left;
         Rectangle r = new Rectangle(left, ps.rcPaint.top,
                                     ps.rcPaint.right-left, ps.rcPaint.bottom-ps.rcPaint.top);
         Rectangle r1 = new Rectangle(ps.rcPaint.left, ps.rcPaint.top,
                                      ps.rcPaint.right-left, ps.rcPaint.bottom-ps.rcPaint.top);
         g.FillRectangle(new SolidBrush(parent.headerBackColor),r);
         //If we have a valid event handler - call it
         if (parent.DrawHeader != null && !parent.DefaultCustomDraw)
             parent.DrawHeader(new DrawHeaderEventArgs(g,r,
                               itemRect.bottom-itemRect.top));
         else
             parent.DrawHeaderBorder(new DrawHeaderEventArgs(g,r,
                                     itemRect.bottom-itemRect.top));
         //Now we have to check if we have owner-draw columns and fill
         //the DRAWITEMSTRUCT appropriately
         int counter = 0;
         foreach (ListColumn mm in parent.Columns)
         {
             if (mm.OwnerDraw)
             {
                 Win32.DRAWITEMSTRUCT dis = new Win32.DRAWITEMSTRUCT();
                 dis.ctrlType = 100;//ODT_HEADER
                 dis.hwnd = m.HWnd;
                 dis.hdc = hdc;
                 dis.itemAction = 0x0001;//ODA_DRAWENTIRE
                 dis.itemID = counter;
                 //Must find if some item is pressed
                 Win32.HDHITTESTINFO hi = new Win32.HDHITTESTINFO();
                 hi.pt.X = parent.PointToClient(MousePosition).X;
                 hi.pt.Y = parent.PointToClient(MousePosition).Y;
                 int hotItem = Win32.SendMessage(m.HWnd, 0x1200+6, 0, ref hi);
                 //If clicked on a divider - we don't have hot item
                 if (hi.flags == 0x0004 || hotItem != counter)
                     hotItem = -1;
                 if (hotItem != -1 && mouseDown)
                     dis.itemState = 0x0001;//ODS_SELECTED
                 else
                     dis.itemState = 0x0020;
                 //HDM_GETITEMRECT
                 Win32.SendMessage(m.HWnd, 0x1200+7, counter, ref itemRect);
                 dis.rcItem = itemRect;
                 //Send message WM_DRAWITEM
                 Win32.SendMessage(parent.Handle,0x002B,0,ref dis);
             }
             counter++;
         }
         Win32.EndPaint(m.HWnd, ref ps);
     }
     else
         base.WndProc(ref m);
     break;
     case 0x0014://WM_ERASEBKGND
     //We don't need to do anything here in order to reduce flicker
     if (parent.FullyCustomHeader)
         break;
     else
         base.WndProc(ref m);
     break;
     case 0x0201://WM_LBUTTONDOWN
     mouseDown = true;
     base.WndProc(ref m);
     break;
     case 0x0202://WM_LBUTTONUP
     mouseDown = false;
     base.WndProc(ref m);
     break;
     case 0x1200+5://HDM_LAYOUT
     base.WndProc(ref m);
     break;
     case 0x0030://WM_SETFONT
     if (parent.IncreaseHeaderHeight > 0)
     {
         System.Drawing.Font f = new System.Drawing.Font(parent.Font.Name,
                 parent.Font.SizeInPoints + parent.IncreaseHeaderHeight);
         m.WParam = f.ToHfont();
     }
     base.WndProc(ref m);
     break;
     default:
     base.WndProc(ref m);
     break;
     }
 }
示例#2
0
 protected override void WndProc(ref Message m)
 {
     Win32.NMHEADER nm;
     switch (m.Msg)
     {
     case 0x004E://WM_NOTIFY
     base.WndProc(ref m);
     Win32.NMHDR nmhdr = (Win32.NMHDR)m.GetLParam(typeof(Win32.NMHDR));
     switch (nmhdr.code)
     {
     case (int)Win32.NM.NM_CLICK-320:
         nm=(Win32.NMHEADER)m.GetLParam(typeof(Win32.NMHEADER));
         if (ClickHeader!=null)
         {
             sortColumn=nm.iItem;
             if (sortOrder==1) sortOrder=-1;
             else sortOrder=1;
             ClickHeader(this.Columns[nm.iItem],
                         new HeaderEventArgs(nm.iItem, nm.iButton));
         }
         break;
     case (0-300-26)://HDN_BEGINTRACK
         nm=(Win32.NMHEADER)m.GetLParam(typeof(Win32.NMHEADER));
         if (BeginDragHeaderDivider != null)
             BeginDragHeaderDivider(this.Columns[nm.iItem],
                                    new HeaderEventArgs(nm.iItem, nm.iButton));
         break;
     case (0-300-20)://HDN_ITEMCHANGING
         nm=(Win32.NMHEADER)m.GetLParam(typeof(Win32.NMHEADER));
         //Adjust the column width
         Win32.RECT rect = new Win32.RECT();
         //HDM_GETITEMRECT
         Win32.SendMessage(header.Handle, 0x1200+7, nm.iItem, ref rect);
         //Get the item height which is actually header's height
         this.headerHeight = rect.bottom-rect.top;
         //para pintar correctamente el progreso
         //Debug.Write("Parte 1: id:" + nm.iItem + " left=" + rect.left + "\n");
         this.m_headerleft[nm.iItem]=rect.left;
         this.m_headerright[nm.iItem]=rect.right;
         this.Columns[nm.iItem].Width = rect.right - rect.left;
         if (DragHeaderDivider != null)
             DragHeaderDivider(this.Columns[nm.iItem],
                               new HeaderEventArgs(nm.iItem, nm.iButton));
         break;
     case (0-300-27)://HDN_ENDTRACK
         nm=(Win32.NMHEADER)m.GetLParam(typeof(Win32.NMHEADER));
         if (EndDragHeaderDivider != null)
             EndDragHeaderDivider(this.Columns[nm.iItem],
                                  new HeaderEventArgs(nm.iItem, nm.iButton));
         break;
     //                      case (0-300-11): //HDN_ENDDRAG
     //                          break;
     }
     break;
     case (int)Win32.OCM.OCM_NOTIFY://Reflected WM_NOTIFY message
     Win32.NMHDR nmh = (Win32.NMHDR)m.GetLParam(typeof(Win32.NMHDR));
     switch (nmh.code)
     {
     case (int)Win32.NM.NM_CUSTOMDRAW:
         Win32.NMCUSTOMDRAW nmcd =
             (Win32.NMCUSTOMDRAW)m.GetLParam(typeof(Win32.NMCUSTOMDRAW));
         if (nmcd.hdr.hwndFrom != this.Handle)
             break;
         switch (nmcd.dwDrawStage)
         {
         case (int)Win32.CDDS.CDDS_PREPAINT:
             m.Result = (IntPtr)Win32.CDRF.CDRF_NOTIFYITEMDRAW;
             break;
         case (int)Win32.CDDS.CDDS_ITEMPREPAINT:
             m.Result = (IntPtr)Win32.CDRF.CDRF_NOTIFYITEMDRAW;
             break;
         case (int)(Win32.CDDS.CDDS_SUBITEM|Win32.CDDS.CDDS_ITEMPREPAINT):
             try
             {
                 Win32.NMLVCUSTOMDRAW nmlv = (Win32.NMLVCUSTOMDRAW)
                                             m.GetLParam(typeof(Win32.NMLVCUSTOMDRAW));
                 if ((Columns[nmlv.iSubItem].subItemOwnerDraw)&&(nmlv.nmcd.dwItemSpec<Items.Count))
                 {
                     Rectangle recgrande=base.GetItemRect(nmlv.nmcd.dwItemSpec);
                     Win32.RECT rc=new Win32.RECT();
                     if (nmlv.iSubItem>0)
                     {
                         rc.top=nmlv.iSubItem;
                         rc.left=0;
                         Win32.SendMessage(this.Handle,0x1000 + 56,nmlv.nmcd.dwItemSpec,ref rc);
                     }
                     else
                     {
                         rc.top=0;
                         rc.left=2;
                         Win32.SendMessage(this.Handle,0x1000 + 14,nmlv.nmcd.dwItemSpec,ref rc);
                     }
                     //Rectangle rec=new Rectangle(rc.left+1,rc.top,rc.right-rc.left-2, rc.bottom-rc.top-2);
                     Rectangle rec=new Rectangle(rc.left,rc.top,rc.right-rc.left, rc.bottom-rc.top);
                     //Point p=this.PointToClient(new Point(rc.left,rc.top));
                     //Point p2=this.PointToClient(new Point(rc.right,rc.bottom));
                     //Rectangle rec=new Rectangle(p.X,rc.top,p2.X-p.X,rc.bottom-rc.top-2);
                     Graphics g = Graphics.FromHdc(nmlv.nmcd.hdc);
                     OnDrawItem(nmlv.nmcd.dwItemSpec,nmlv.iSubItem,g,rec);
                     g.Dispose();
                     //Win32.ReleaseDC(nmcd.hdr.hwndFrom,nmlv.nmcd.hdc);
                     m.Result = (IntPtr)Win32.CDRF.CDRF_SKIPDEFAULT;
                 }
                 else
                     base.WndProc(ref m);//m.Result = (IntPtr)Win32.CDRF.CDRF_DODEFAULT;
                 Marshal.StructureToPtr(nmlv,m.LParam,true);
             }
             catch
             {
                 base.WndProc(ref m);
             }
             break;
         }
         break;
     default:
         base.WndProc(ref m);
         break;
     }
     break;
     case 0x002B://WM_DRAWITEM
     try
     {
         //Get the DRAWITEMSTRUCT from the LParam of the message
         Win32.DRAWITEMSTRUCT dis = (Win32.DRAWITEMSTRUCT)Marshal.PtrToStructure(
                                        m.LParam,typeof(Win32.DRAWITEMSTRUCT));
         //agregar aqui la posicion x para pintar bien el progreso.
         //Debug.Write("parte3: id: " + dis.itemID + "\n");
         this.m_headerleft[dis.itemID] = dis.rcItem.left;
         this.m_headerright[dis.itemID] = dis.rcItem.right;
         //Check if this message comes from the header
         if (dis.ctrlType == 100)//ODT_HEADER - it do comes from the header
         {
             //Get the graphics from the hdc field of the DRAWITEMSTRUCT
             Graphics g = Graphics.FromHdc(dis.hdc);
             //Create a rectangle from the RECT struct
             Rectangle r = new Rectangle(dis.rcItem.left, dis.rcItem.top, dis.rcItem.right -
                                         dis.rcItem.left, dis.rcItem.bottom - dis.rcItem.top);
             //Create new DrawItemState in its default state
             DrawItemState d = DrawItemState.Default;
             //Set the correct state for drawing
             if (dis.itemState == 0x0001)
                 d = DrawItemState.Selected;
             //Create the DrawItemEventArgs object
             DrawItemEventArgs e = new DrawItemEventArgs(g,this.Font,r,dis.itemID,d);
             //If we have a handler attached call it and we don't want the default drawing
             if (DrawColumn != null && !defaultCustomDraw)
                 DrawColumn(this.Columns[dis.itemID], e);
             else if (defaultCustomDraw)
                 DoMyCustomHeaderDraw(this.Columns[dis.itemID],e);
             //Release the graphics object
             g.Dispose();
         }
     }
     catch
     {
         try
         {
             base.WndProc(ref m);
         }
         catch {}
     }
     break;
     case 0x0002://WM_DESTROY
     //Release the handle associated with the header control window
     header.ReleaseHandle();
     base.WndProc(ref m);
     break;
     case 0x0014://WM_ERASEBKGND
     if (this.Items.Count==0)
         base.WndProc(ref m);
     else
     {
         try
         {
             Brush backBrush=new SolidBrush(BackColor);
             //up
             Rectangle clientRect=this.ClientRectangle;//this.GetItemAt(0,0).Index
             Rectangle rec=clientRect;
             Graphics g = Graphics.FromHdc(m.WParam);
             rec.X=clientRect.X;
             rec.Y=clientRect.Y;
             rec.Width=clientRect.Width;
             rec.Height=this.HeaderHeight+2;
             g.FillRectangle(backBrush,rec);
             //left
             Rectangle itemRect=this.GetItemRect(0,ItemBoundsPortion.Entire);
             rec.Width=itemRect.Left-clientRect.Left+2;
             rec.Height=clientRect.Height+itemRect.Height+2;
             if (rec.Width>0)
             {
                 g.FillRectangle(backBrush,rec);
             }
             //right
             rec.X=itemRect.Right;
             rec.Y=clientRect.Top;
             rec.Width=clientRect.Width-itemRect.Width;
             rec.Height=clientRect.Height;
             g.FillRectangle(backBrush,rec);
             //Debug.WriteLine(rec.ToString());
             //bottom
             itemRect=this.GetItemRect(this.Items.Count-1,ItemBoundsPortion.Entire);
             rec.X=clientRect.Left;
             rec.Y=itemRect.Bottom;
             rec.Width=clientRect.Width;
             rec.Height=clientRect.Height-rec.Y+clientRect.Width;
             if (rec.Height>0)
             {
                 g.FillRectangle(backBrush,rec);
             }
         }
         catch
         {
             base.WndProc(ref m);
         }
     }
     break;
     default:
     try //Message 0x7b WM_CONTEXTMENU can cause exceptions if control is invisible
     {
         base.WndProc(ref m);
     }
     catch//(Exception e)
     {
         //Debug.WriteLine(e.ToString());
         Visible=true;
     }
     break;
     }
 }