phGant Time Package同時(shí)包含了phGantt 和phSchema控件，是一款快速、完全面向?qū)ο蟮腁ctiveX控件，有著豐富的圖形用戶界面，客戶可以熟練地操作時(shí)間進(jìn)度條。時(shí)間進(jìn)度條可以以甘特圖和概要視圖的形式顯示。該控件是一款強(qiáng)大的日程安排、項(xiàng)目管理控件，被國際上許多大公司所使用，慧都控件作為PlexityHide公司在中國的核心代理商，為客戶提供優(yōu)質(zhì)的客服和技術(shù)之支持。

10886：我想用phGantTimePackage用不同的顏色為某些日子的列著色。

問題

我想用phGantTimePackage用不同的顏色為某些日子涂色。您能否提供一個(gè)示例，說明如何使用OnGantAreaDrawBackground處理程序?qū)崿F(xiàn)此目的？

回答

為此，您必須知道一天的開始和結(jié)束時(shí)間（以像素為單位），可以通過將日期時(shí)間發(fā)送到IphGantX3.DateToPixel方法來輕松找到。

所以在偽代碼中，我將像這樣：

int numberOfDaysOnScreen=Round(phGant.Stop-phGant.Start)
for i=0 to numberOfDaysOnScreen-1 do
begin
  DateTime oneDay=phGantt.Start+i
  Color c=GetColorForThisDay(oneDay)
  int PixelForStartOfDay=phGantt.DateToPixel(Trunc(oneDay))
  int PixelForEndOfDay=phGantt.DateToPixel(Trunc(oneDay)+1)
  DrawColoredRectangle(PixelForStartOfDay,0,PixelForEndOfDay,Gantt.Height)
end

問題

我希望對鏈接的外觀有更多的控制。我一直試圖以有限的成功使用OnUserDrawLinks。是否有使用OnUserDrawLinks的示例（首選Delphi）？

回答

繪制鏈接以使它們在所有情況下看起來都很好，這很難。這就是為什么我們通過用戶繪制鏈接事件為您打開一扇門的原因。

這是我們繪制鏈接的代碼：

procedure TphGant_ComBasic.DrawLink(theStartPoint,theStopPoint:TPoint;
  theCanvas:TCanvas;theLinkStyle:TLinkStyle; theLinkColor:TColor;theLinkPenWidth: Integer;
  aDataEntity_Link:TphDataEntity_Link);
var
  aMiddlePoint, aNewStopPoint:TPoint;
  cLRArr, cUDArr ,cOri,ssFold,ssMinDist, OldPenWidth:Integer;
  aColor : TColor;
begin
  OldPenWidth := theCanvas.Pen.Width;
  try
    theCanvas.Pen.Color := theLinkColor;
    theCanvas.Pen.Width := theLinkPenWidth;
    theCanvas.MoveTo(theStartPoint.X,theStartPoint.Y);
    cLRArr := 3;
    cUDArr := 3;
    cOri:=1;
    ssMinDist:=7;
    if GA.IsPrinting then
    begin
      cLRArr := Round(3*GA.Scalex);
      cUDArr := Round(3*GA.Scaley);
      ssMinDist:=Round(ssMinDist*GA.Scalex);
    end;
    aNewStopPoint := theStopPoint;
    if Assigned(aDataEntity_Link) and (aDataEntity_Link.StartFinishOption=tlsfSS) then
    begin
      // tlsfSS is treated the same way for tlsDefault and tlsMSProject
      if theStartPoint.X>theStopPoint.X then
        ssFold:=theStopPoint.X-ssMinDist
      else
        ssFold:=theStartPoint.X-ssMinDist;

      theCanvas.LineTo(ssFold,theStartPoint.Y);
      theCanvas.LineTo(ssFold,aNewStopPoint.Y);
      theCanvas.LineTo(aNewStopPoint.X,aNewStopPoint.Y);

      theLinkStyle:=tlsDefault;
    end
    else
    begin

      case theLinkStyle of
        tlsDefault:
    begin
      if theStartPoint.X>theStopPoint.X then
              cOri:=-1;
            // Moves horizonatal endpoint one extra pixel to get get nicer looking arrows
            aNewStopPoint.X := theStopPoint.X-cOri;
            // This code draws the line cut in three parts - horizontal - vertical - horizontal
            aMiddlePoint.X:=theStartPoint.X+((aNewStopPoint.X-theStartPoint.X) div 2);
            aMiddlePoint.Y:=theStartPoint.Y+((aNewStopPoint.Y-theStartPoint.Y) div 2);
            theCanvas.LineTo(aMiddlePoint.X,theStartPoint.Y);
            theCanvas.LineTo(aMiddlePoint.X,aNewStopPoint.Y);
            theCanvas.LineTo(aNewStopPoint.X,aNewStopPoint.Y);
          end;
        tlsMSProject:
          begin
            if theStartPoint.Y<theStopPoint.Y then
              cOri:=-1;
            if theStartPoint.X < theStopPoint.X then
              aNewStopPoint.X := theStopPoint.X + cUDArr  // Moves endpoint horizontal get the arrow "inside" the box
            else
              aNewStopPoint.X := theStopPoint.X - cUDArr; // Moves endpoint horizontal get the arrow "inside" the box
            // Moves endpoint one extra pixel up/down to get nicer looking arrows
            aNewStopPoint.Y := theStopPoint.Y+cOri;
            // Draw horizontal line, then downwards to the recieving point
            theCanvas.LineTo(aNewStopPoint.X,theStartPoint.Y);
            theCanvas.LineTo(aNewStopPoint.X,aNewStopPoint.Y+cUDArr*cOri);
          end;
      end;
    end;
    // Don't draw the arrow if we are "out of bounds"
    if PointInRect( aNewStopPoint, theCanvas.ClipRect ) then
    begin
      case theLinkStyle of
        tlsDefault:
          begin
            // This code draws the arrow
            theCanvas.LineTo(aNewStopPoint.X-cLRArr*cOri,aNewStopPoint.Y-cLRArr);
            theCanvas.LineTo(aNewStopPoint.X-cLRArr*cOri,aNewStopPoint.Y+cLRArr);
            theCanvas.LineTo(aNewStopPoint.X,aNewStopPoint.Y);
          end;
        tlsMSProject:
          begin
            // This code draws the arrow downwards or upwards!
            aColor := theCanvas.Brush.Color;
            theCanvas.Brush.Color := theLinkColor;
            theCanvas.Polygon( [
              Point(aNewStopPoint.X,aNewStopPoint.Y),
              Point(aNewStopPoint.X-cUDArr,aNewStopPoint.Y+cUDArr*cOri),
              Point(aNewStopPoint.X+cUDArr,aNewStopPoint.Y+cUDArr*cOri)
              ] );
            theCanvas.Brush.Color := aColor;
          end;
      end;
    end;
  finally
    theCanvas.Pen.Width := OldPenWidth;
  end;
end;

問題

我們在產(chǎn)品集中使用GTP Gannt，并且需要支持Vista。請讓我知道您對Vista提供的支持。

回答

GTP.NET 3.0完全支持Windows Windows Vista。phGantTimePackage 3.2還支持Vista。

10669：隱藏非工作日

問題

在日歷上，我只需要發(fā)布卷軸工作的日期，這意味著我不必發(fā)布工作日和公眾假期。因此，能否請您告訴我如何在日歷上發(fā)布我自己解決的工作日，最后您可以向我發(fā)送vb6代碼。

回答

datescaler只能“隱藏”特定的日期類型（如所有星期五），而不能“隱藏”特定的日期（如2月23日）。

當(dāng)我們開發(fā)時(shí)間隱藏功能時(shí)，我們發(fā)現(xiàn)人們在零星的日子消失時(shí)感到困惑。但并非如此（如所有星期五）。

要隱藏所有星期五，您可以調(diào)用SetHiddenDayType 5，true

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dhtmlxGantt：交互式JavaScript / HTML5甘特圖

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