做出像Word中的尺標工具的方法

void __fastcall TFrameDiary::PaintBoxPaint(TObject *Sender)
{
    TRect rect;
    rect.Left = 5;
    rect.Top = 2;
    rect.Right = PaintBox->Width - 5;
    rect.Bottom = PaintBox->Height - 2;
    // 繪製白色底色
    PaintBox->Canvas->FillRect( rect );
   // 繪製刻度與文字
    for ( int nGrid=5; nGridWidth-5; nGrid =60 )
    {
        PaintBox->Canvas->TextOutA( nGrid-PaintBox->Font->Size*IntToStr(nGrid/60).Length()/2, 6 PaintBox->Font->Height/2, IntToStr(nGrid/60) );
        PaintBox->Canvas->MoveTo( nGrid 15, 7 );
        PaintBox->Canvas->LineTo( nGrid 15, 9 );
        PaintBox->Canvas->MoveTo( nGrid 30, 6 );
        PaintBox->Canvas->LineTo( nGrid 30, 10 );
        PaintBox->Canvas->MoveTo( nGrid 45, 7 );
        PaintBox->Canvas->LineTo( nGrid 45, 9 );
    }
}