**
//tpen 的主要屬性有四: color、width、style、mode
pssolid = 0;
psdash = 1;
psdot = 2;
psdashdot = 3;
psdashdotdot = 4;
psclear = 5;
psinsideframe = 6;
psuserstyle = 7;
psalternate = 8;
//下面的例子依次展示了各種樣式:
var
i,x,y,n: integer;
begin
x := 10;
y := 15;
n := clientwidth - 2*x;
canvas.pen.color := clred;
for i := 0 to 8 do
begin
canvas.pen.style := tpenstyle(i);
canvas.moveto(x, y);
canvas.lineto(x + n, y);
y := y + 15;
end;
end;
//效果圖:
//顏色模式測試程式:
var
i,x,y,w,n: integer;
begin
x := 0;
y := 0;
w := clientwidth div 18;
for i := 0 to 18 do
begin
canvas.brush.color := paletteindex(i);
canvas.fillrect(rect(x, y, x+w, clientheight));
x := x + w;
end;
x := 0;
y := 20;
n := clientwidth;
canvas.pen.width := 4;
canvas.pen.color := clred;
for i := 0 to 15 do
begin
canvas.pen.mode := tpenmode(i);
canvas.moveto(x, y);
canvas.lineto(x + n, y);
y := y + 20;
end;
end;
//效果圖:
:**//tpen 的主要屬性有四: color、width、style、mode
pssolid = 0;
psdash = 1;
psdot = 2;
psdashdot = 3;
psdashdotdot = 4;
psclear = 5;
psinsideframe = 6;
psuserstyle = 7;
psalternate = 8;
//下面的例子依次展示了各種樣式:
var
i,x,y,n: integer;
begin
x := 10;
y := 15;
n := clientwidth - 2*x;
canvas.pen.color := clred;
for i := 0 to 8 do
begin
canvas.pen.style := tpenstyle(i);
canvas.moveto(x, y);
canvas.lineto(x + n, y);
y := y + 15;
end;
end;
//效果圖:
//顏色模式測試程式:
var
i,x,y,w,n: integer;
begin
x := 0;
y := 0;
w := clientwidth div 18;
for i := 0 to 18 do
begin
canvas.brush.color := paletteindex(i);
canvas.fillrect(rect(x, y, x+w, clientheight));
x := x + w;
end;
x := 0;
y := 20;
n := clientwidth;
canvas.pen.width := 4;
canvas.pen.color := clred;
for i := 0 to 15 do
begin
canvas.pen.mode := tpenmode(i);
canvas.moveto(x, y);
canvas.lineto(x + n, y);
y := y + 20;
end;
end;
//效果圖:
:
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