bool NotifyHeaderCustomDraw(ref Message m)
{
m.Result = (IntPtr)CustomDrawReturnFlags.CDRF_DODEFAULT;
NMCUSTOMDRAW nmcd = (NMCUSTOMDRAW)m.GetLParam(typeof(NMCUSTOMDRAW));
if (nmcd.hdr.hwndFrom != hHeader)
{
return(false);
}
switch (nmcd.dwDrawStage)
{
case (int)CustomDrawDrawStateFlags.CDDS_PREPAINT:
// Ask for Item painting notifications
m.Result = (IntPtr)CustomDrawReturnFlags.CDRF_NOTIFYITEMDRAW;
break;
case (int)CustomDrawDrawStateFlags.CDDS_ITEMPREPAINT:
DoHeaderCustomDrawing(ref m);
break;
case (int)NotificationMessages.NM_NCHITTEST:
break;
default:
break;
}
return(false);
}
internal void HandleColumnsDrawing(TreeListNode tlNode, NMCUSTOMDRAW cd)
{
RECT newRect = cd.rc;
// Make text align correctly - seems to be off a pixel
newRect.top += 1;
using (Graphics g = Graphics.FromHdc(cd.hdc)) {
// Do each of the columns defined for the tree
for (int i = 0; i < _treeView.Columns.Count; i++)
{
newRect.left = cd.rc.left + ((Splitter)_columnHeaderSplitters[i]).Bounds.X - _scrollPos;
Object colData = tlNode.ColumnData[i];
if (i == 0)
{
// Clear out the data for the column (first time)
g.FillRectangle(SystemBrushes.Window, newRect.left - PIXEL_PADDING, cd.rc.top, cd.rc.right, cd.rc.bottom);
}
// Vertical line to separate the columns
g.DrawLine(_greyPen, newRect.left, cd.rc.top, newRect.left, cd.rc.bottom);
// Write the actual text
if (colData != null)
{
// Start the text one pixel after the line
newRect.left += PIXEL_PADDING;
g.DrawString(colData.ToString(), _treeView.Font, SystemBrushes.ControlText, newRect.left, newRect.top);
}
}
// Draw the horizontal grid lines
g.DrawLine(_greyPen, cd.rc.left, cd.rc.top, cd.rc.right, cd.rc.top);
g.DrawLine(_greyPen, cd.rc.left, cd.rc.bottom, cd.rc.right, cd.rc.bottom);
}
}
bool NotifyListCustomDraw(ref Message m)
{
m.Result = (IntPtr)CustomDrawReturnFlags.CDRF_DODEFAULT;
NMCUSTOMDRAW nmcd = (NMCUSTOMDRAW)m.GetLParam(typeof(NMCUSTOMDRAW));
//IntPtr thisHandle = Handle;
if (nmcd.hdr.hwndFrom != Handle)
{
return(false);
}
switch (nmcd.dwDrawStage)
{
case (int)CustomDrawDrawStateFlags.CDDS_PREPAINT:
// Ask for Item painting notifications
m.Result = (IntPtr)CustomDrawReturnFlags.CDRF_NOTIFYITEMDRAW;
break;
case (int)CustomDrawDrawStateFlags.CDDS_ITEMPREPAINT:
m.Result = (IntPtr)CustomDrawReturnFlags.CDRF_NOTIFYSUBITEMDRAW;
break;
case (int)(CustomDrawDrawStateFlags.CDDS_ITEMPREPAINT | CustomDrawDrawStateFlags.CDDS_SUBITEM):
// Draw background
DoListCustomDrawing(ref m);
break;
default:
break;
}
return(false);
}
/// <summary>
///
/// </summary>
/// <param name="m"></param>
protected override void WndProc(ref System.Windows.Forms.Message m)
{
switch (m.Msg)
{
case WM_NOTIFY:
{
base.WndProc(ref m);
NMHDR nm1 = ( NMHDR )m.GetLParam(typeof(NMHDR));
switch (nm1.code)
{
case ( int )NotificationMessages.NM_CUSTOMDRAW:
{
m.Result = ( IntPtr )CustomDrawReturnFlags.CDRF_DODEFAULT;
NMCUSTOMDRAW nmcd = ( NMCUSTOMDRAW )m.GetLParam(typeof(NMCUSTOMDRAW));
switch (nmcd.dwDrawStage)
{
case ( int )CustomDrawDrawStateFlags.CDDS_PREPAINT:
CddsPrePaint(ref m);
break;
case ( int )CustomDrawDrawStateFlags.CDDS_POSTPAINT:
CddsPostPaint(ref m);
break;
case ( int )CustomDrawDrawStateFlags.CDDS_ITEMPREPAINT:
CddsItemPrePaint(ref m);
break;
case ( int )CustomDrawDrawStateFlags.CDDS_ITEMPOSTPAINT:
CddsItemPostPaint(ref m);
break;
case ( int )CustomDrawDrawStateFlags.CDDS_SUBITEMPREPAINT:
CddsSubItemPrePaint(ref m);
break;
case ( int )CustomDrawDrawStateFlags.CDDS_SUBITEMPOSTPAINT:
CddsSubItemPostPaint(ref m);
break;
}
}
break;
}
}
break;
default:
base.WndProc(ref m);
break;
}
}
protected override void WndProc(ref Message m)
{
switch (m.Msg)
{
case Windows.WM_NOTIFY: {
NMHDR nmhdr = (NMHDR)m.GetLParam(typeof(NMHDR));
switch (nmhdr.code)
{
case Windows.NM_CUSTOMDRAW: {
NMCUSTOMDRAW cd = (NMCUSTOMDRAW)m.GetLParam(typeof(NMCUSTOMDRAW));
switch (cd.dwDrawStage)
{
case Windows.CDDS_PREPAINT:
// Tell windows we want to see the POSTPAINT event
m.Result = (IntPtr)Windows.CDRF_NOTIFYITEMDRAW;
_scrollPos = Windows.GetScrollPos(cd.nmcd.hwndFrom,
Windows.SB_HORZ);
SetupTopPanelSizes();
return;
case Windows.CDDS_ITEMPREPAINT:
// Tell windows we want to see the POSTPAINT event
m.Result = (IntPtr)Windows.CDRF_NOTIFYPOSTPAINT;
return;
case Windows.CDDS_ITEMPOSTPAINT:
TreeNode node =
_treeView.GetNodeFromHandle(cd.dwItemSpec);
if (node is TreeListNode)
{
HandleColumnsDrawing((TreeListNode)node, cd);
}
break;
default:
break;
}
break;
}
}
break;
}
}
base.WndProc(ref m);
}
/// <summary>
///
/// </summary>
/// <param name="m"></param>
protected virtual void CddsItemPostPaint(ref System.Windows.Forms.Message m)
{
NMCUSTOMDRAW nmcd = ( NMCUSTOMDRAW )m.GetLParam(typeof(NMCUSTOMDRAW));
int iColumn = nmcd.dwItemSpec;
Rectangle rcHeader = new Rectangle(nmcd.rc.left,
nmcd.rc.top,
nmcd.rc.right - nmcd.rc.left,
nmcd.rc.bottom - nmcd.rc.top);
using (Graphics g = Graphics.FromHdc(nmcd.hdc))
{
ColumnHeaderPaintEventArg pe = new ColumnHeaderPaintEventArg(g, rcHeader, this.Columns[iColumn]);
OnColumnHeaderPaint(pe);
}
// free resources and say to control skip default drawing
m.Result = ( IntPtr )CustomDrawReturnFlags.CDRF_SKIPDEFAULT;
}
void DoHeaderCustomDrawing(ref Message m)
{
NMCUSTOMDRAW nmcd = (NMCUSTOMDRAW)m.GetLParam(typeof(NMCUSTOMDRAW));
using (Graphics g = Graphics.FromHdc(nmcd.hdc))
{
Rectangle rc = GetHeaderCtrlRect();
rc = GetHeaderItemRect(nmcd.dwItemSpec);
int itemRight = rc.Left + rc.Width;
g.FillRectangle(new SolidBrush(SystemColors.ScrollBar), rc.Left, rc.Top, rc.Width, rc.Height);
if (nmcd.dwItemSpec == PressedHeaderItem && !IsCursorOnDivider() && Tracking == false)
{
PressedHeaderItem = -1;
rc.Inflate(-1, -1);
g.FillRectangle(new SolidBrush(ColorUtil.VSNetPressedColor), rc.Left, rc.Top, rc.Width, rc.Height);
}
else
{
ControlPaint.DrawBorder3D(g, rc.Left, rc.Top, rc.Width,
rc.Height - 1, Border3DStyle.RaisedInner, Border3DSide.All);
}
string text = GetHeaderItemText(nmcd.dwItemSpec);
Debug.WriteLine(text);
Size textSize = TextUtil.GetTextSize(g, text, Font);
int gap = 4;
Point pos = new Point(rc.Left + gap, rc.Top + ((rc.Height - textSize.Height) / 2));
int headerImageIndex;
if (headerIconsList != null && HasHeaderImage(nmcd.dwItemSpec, out headerImageIndex))
{
if (headerImageIndex != -1)
{
Image image = headerImageList.Images[headerImageIndex];
if (image != null)
{
g.DrawImage(headerImageList.Images[headerImageIndex], rc.Left + gap, rc.Top);
pos.X += IMAGE_WIDTH;
rc.Width = rc.Width - IMAGE_WIDTH;
}
}
}
// Draw arrow glyph
if (nmcd.dwItemSpec == lastSortedColumn)
{
int Left = pos.X + 2;
Left += textSize.Width + TEXT_TO_ARROW_GAP;
Rectangle arrowRect = new Rectangle(Left, rc.Top, ARROW_WIDTH, rc.Height);
if (itemRight >= (Left + ARROW_WIDTH + 4))
{
if (Sorting == SortOrder.Ascending || Sorting == SortOrder.None)
{
DrawUpArrow(g, arrowRect);
}
else
{
DrawDownArrow(g, arrowRect);
}
}
}
// I use the Windows API instead of the Graphics object to draw the string
// because the Graphics object draws ellipes without living blank spaces in between
// the DrawText API adds those blank spaces in between
int ellipsingTringgering = 8;
Rectangle drawRect = new Rectangle(pos.X + 2, pos.Y, rc.Width - gap - ellipsingTringgering, rc.Height);
TextUtil.DrawText(g, text, Font, drawRect);
}
m.Result = (IntPtr)CustomDrawReturnFlags.CDRF_SKIPDEFAULT;
}
public extern static int RtlMoveMemory(
ref NMCUSTOMDRAW destination, IntPtr Source, int length);
private extern static int RtlMoveMemory(ref NMCUSTOMDRAW Destination, IntPtr Source, int Length);
protected override IntPtr OnNotify(IntPtr hWnd, WM msg, IntPtr wParam, IntPtr lParam)
{
if (prevWndProc == IntPtr.Zero)
{
return(IntPtr.Zero);
}
NMCUSTOMDRAW nmcd = (NMCUSTOMDRAW)Marshal.PtrToStructure(lParam, typeof(NMCUSTOMDRAW));
//System.Diagnostics.Debug.WriteLine(string.Format("{0}", (NM)nmcd.hdr.code));
if (nmcd.hdr.code == (int)NM.DBLCLK)
{
OnDoubleClick(EventArgs.Empty);
return(IntPtr.Zero);
}
if (nmcd.hdr.code != (int)NM.CUSTOMDRAW || nmcd.hdr.hwndFrom != control.Handle)
{
return(Win32Window.CallWindowProc(prevWndProc, hWnd, msg, wParam, lParam));
}
CustomDrawType cd = (CustomDrawType)Marshal.PtrToStructure(lParam, typeof(CustomDrawType));
//System.Diagnostics.Debug.WriteLine(cd.dwDrawStage);
try
{
switch (cd.dwDrawStage)
{
case CDDS.PREPAINT:
if (FullPaint && !OnPrepaint(ref cd))
{
return((IntPtr)CDRF.DODEFAULT);
}
return((IntPtr)(CDRF.NOTIFYITEMDRAW | CDRF.NOTIFYPOSTERASE | CDRF.NOTIFYSUBITEMDRAW | CDRF.NOTIFYPOSTPAINT));
case CDDS.ITEMPREPAINT:
//if (listView.View == View.Details)
// return (int)CDRF.NOTIFYSUBITEMDRAW;
if (!OnPrepaintItem(ref cd))
{
return((IntPtr)CDRF.DODEFAULT);
}
if (fullPaint)
{
return((IntPtr)(CDRF.SKIPDEFAULT));
}
else
{
return((IntPtr)(CDRF.NOTIFYSUBITEMDRAW));
}
case CDDS.SUBITEMPREPAINT:
if (!OnPrepaintItem(ref cd))
{
return((IntPtr)CDRF.DODEFAULT);
}
if (fullPaint)
{
return((IntPtr)(CDRF.SKIPDEFAULT));
}
else
{
return((IntPtr)(CDRF.NOTIFYITEMDRAW));
}
case CDDS.ITEMPOSTPAINT:
return((IntPtr)(CDRF.SKIPDEFAULT));
case CDDS.PREERASE:
if (fullPaint || !OnPreerase(ref cd))
{
return((IntPtr)CDRF.DODEFAULT);
}
return((IntPtr)(CDRF.NOTIFYPOSTERASE));
}
}
finally
{
Marshal.StructureToPtr(cd, lParam, false);
}
return((IntPtr)CDRF.DODEFAULT);
}
public static extern int RtlMoveMemory(ref NMCUSTOMDRAW destination, IntPtr Source, int length);
