Exemplo n.º 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;
                }
            }
Exemplo n.º 2
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;
				}
			}