TFont与TLogFont有无必然的联系？

[CathyWang]

前者的Size、Height和Name与后者的lfHeight, lfFaceName等有什么关系

[Borlandor]

TLogicFont用法：

procedure SetLogicFont(ACanvas: TCanvas;W: Integer = 0;H: Integer = 0);
var LogicFont: TLogFont;
begin
with LogicFont,ACanvas.Font do
begin
if H = 0 then lfHeight := Height
else lfHeight := H;
lfWidth := W;
lfEscapement := 10*Direction;
lfOrientation := 10*Direction;
lfWeight := FW_NORMAL;//FW_BOLD;
lfItalic := BYTE(fsItalic in Style);
lfUnderline := BYTE(fsUnderline in Style);
lfStrikeOut := BYTE(fsStrikeOut in Style);
lfCharSet := Charset;
lfOutPrecision := OUT_TT_PRECIS;
lfClipPrecision := CLIP_DEFAULT_PRECIS;
lfQuality := DEFAULT_QUALITY;

lfPitchAndFamily := DEFAULT_PITCH or FF_DONTCARE;
StrCopy(lfFaceName,PChar(Name));
end;
ACanvas.Font.Handle := Windows.CreateFontIndirect(LogicFont);
end;