如何反推TLineSeries的值?? |
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尚未結案
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kaiming
一般會員   發表：6 回覆：11 積分：8 註冊：2004-03-01 發送簡訊給我 |
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michaelhuang
一般會員 發表：2 回覆：3 積分：1 註冊：2004-05-11 發送簡訊給我 |
TColor tmp;
tmp = Chart1->BackColor;
if (tmp == clTeeColor)
tmp = clBtnFace;
Chart1->Canvas->Pen->Color = (TColor)(CrossHairColor ^ ColorToRGB(tmp)); Chart1->Canvas->Pen->Style = CrossHairStyle;
Chart1->Canvas->Pen->Mode = pmXor;
Chart1->Canvas->Pen->Width = 1;
Chart1->Canvas->MoveTo(ax,Chart1->ChartRect.Top-Chart1->Height3D);
Chart1->Canvas->LineTo(ax,Chart1->ChartRect.Bottom-Chart1->Height3D);
Chart1->Canvas->MoveTo(Chart1->ChartRect.Left Chart1->Width3D,ay);
Chart1->Canvas->LineTo(Chart1->ChartRect.Right Chart1->Width3D,ay);
} void __fastcall TMainForm::Chart1MouseMove(TObject *Sender,
TShiftState Shift, int X, int Y)
{
double tmpX,tmpY;
if (OldX != 1) {
DrawCross(OldX,OldY); // draw old crosshair
OldX = -1;
} // check if (mouse is inside Chart rectangle
if (PtInRect((RECT*)&Chart1->ChartRect, Point(X-Chart1->Width3D,Y Chart1->Height3D))) {
DrawCross(X,Y); // draw crosshair at current position
// store old position
OldX = X;
OldY = Y;
// set label text Series1->GetCursorValues(tmpX,tmpY); // <-- get values under mouse cursor
Label7->Caption = Series1->GetVertAxis->LabelValue(tmpX)
" , " Series1->GetHorizAxis->LabelValue(tmpY);
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michaelhuang
一般會員 發表：2 回覆：3 積分：1 註冊：2004-05-11 發送簡訊給我 |
sorry上面有點錯 請參考這一個
void TCrossHairForm::DrawCross(int ax, int ay)
{
TColor tmp;
tmp = Chart1->BackColor;
if (tmp == clTeeColor)
tmp = clBtnFace;
Chart1->Canvas->Pen->Color = (TColor)(CrossHairColor ^ ColorToRGB(tmp)); Chart1->Canvas->Pen->Style = CrossHairStyle;
Chart1->Canvas->Pen->Mode = pmXor;
Chart1->Canvas->Pen->Width = 1;
Chart1->Canvas->MoveTo(ax,Chart1->ChartRect.Top-Chart1->Height3D);
Chart1->Canvas->LineTo(ax,Chart1->ChartRect.Bottom-Chart1->Height3D);
Chart1->Canvas->MoveTo(Chart1->ChartRect.Left Chart1->Width3D,ay);
Chart1->Canvas->LineTo(Chart1->ChartRect.Right Chart1->Width3D,ay);
} void __fastcall TCrossHairForm::Chart1MouseMove(TObject *Sender,
TShiftState Shift, int X, int Y)
{
double tmpX,tmpY;
if (OldX != 1) {
DrawCross(OldX,OldY); // draw old crosshair
OldX = -1;
} // check if (mouse is inside Chart rectangle
if (PtInRect((RECT*)&Chart1->ChartRect, Point(X-Chart1->Width3D,Y Chart1->Height3D))) {
DrawCross(X,Y); // draw crosshair at current position
// store old position
OldX = X;
OldY = Y;
// set label text
LineSeries1->GetCursorValues(tmpX,tmpY); // <-- get values under mouse cursor
Label1->Caption = LineSeries1->GetVertAxis->LabelValue(tmpY)
" " LineSeries1->GetHorizAxis->LabelValue(tmpX);
}
}
請在.h裏的
private: // User declarations
int OldX;
int OldY;
TColor CrossHairColor;
TPenStyle CrossHairStyle;
void DrawCross(int AX, int AY);
加入這此些宣告
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kaiming
一般會員 發表：6 回覆：11 積分：8 註冊：2004-03-01 發送簡訊給我 |
發表時間：2004-06-12 03:39:21
IP:61.70.xxx.xxx 未訂閱
系統時間：2024-05-14 12:22:10
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