Delphi GDI + learning Record (8): Shadow painting Brush

//阴影画刷
var
　g: TGPGraphics;
　hb: TGPHatchBrush;
begin
　g := TGPGraphics.Create(Canvas.Handle);
　hb := TGPHatchBrush.Create(HatchStyleHorizontal, aclRed, aclYellow);
　{参数1是阴影样式; 参数2是前景色; 参数3是背景色, 参数3可选, 默认黑色}
　g.FillEllipse(hb, 11, 11, 222, 111);
　hb.Free;
　g.Free;
end;

Brush Shadow Style sheet:

Delphi	Microsoft	Description
Hatchstylebackwarddiagonal	Backwarddiagonal	The line pattern of the diagonal from top right to bottom left.
Hatchstylecross	Cross	Specifies the cross horizontal and vertical lines.
Hatchstyledarkdownwarddiagonal	Darkdownwarddiagonal	Specifies the diagonal from the vertex to the right, with an angle of 50% smaller than the forwarddiagonal and twice times the width. This shadow pattern is not antialiasing.
Hatchstyledarkhorizontal	Darkhorizontal	Specifies that the sides of the horizontal line are 50% smaller than the horizontal and twice times the width of the horizontal.
Hatchstyledarkupwarddiagonal	Darkupwarddiagonal	Specifies a diagonal line from the vertex to the left, with an angle of 50% smaller than backwarddiagonal and twice times the width, but these lines are not jagged.
Hatchstyledarkvertical	Darkvertical	Specifies that the angle between the two sides of the vertical line is 50% smaller than the vertical and twice times the width.
Hatchstyledasheddownwarddiagonal	Dasheddownwarddiagonal	Specifies dashed diagonal lines that tilt from the vertex to the right point.
Hatchstyledashedhorizontal	Dashedhorizontal	Specifies a dashed horizontal line.
Hatchstyledashedupwarddiagonal	Dashedupwarddiagonal	Specifies dashed diagonal lines that tilt from the vertex to the left.
Hatchstyledashedvertical	Dashedvertical	Specifies a dashed vertical line.
Hatchstylediagonalbrick	Diagonalbrick	Specifies a shadow that has the appearance of a layered brick, which is tilted to the left from the vertex point.
Hatchstylediagonalcross	Diagonalcross	A pattern of crossed diagonal lines.
Hatchstyledivot	Divot	Specifies a shadow with a turf layer appearance.
Hatchstyledotteddiamond	Dotteddiamond	Specifies forward diagonal and reverse diagonal lines that intersect each other, and each diagonal is composed of dots.
Hatchstyledottedgrid	Dottedgrid	Specifies horizontal and vertical lines that intersect each other, and each line is made up of dots.
Hatchstyleforwarddiagonal	ForwardDiagonal	The line pattern of the diagonal from top left to bottom right.
Hatchstylehorizontal	Horizontal	The pattern of the horizontal line.
Hatchstylehorizontalbrick	Horizontalbrick	Specifies a shadow that has the appearance of a horizontal layered brick.
Hatchstylelargecheckerboard	Largecheckerboard	Specifies a shadow with a chessboard appearance, which has a smallcheckerboard size of twice times the size of the board.
Hatchstylelargeconfetti	Largeconfetti	Specifies a shadow with a multicolored confetti appearance, and it is made of a larger slice than the Smallconfetti.
Hatchstylelargegrid	Largegrid	Specifies the shadow style cross.
Hatchstylelightdownwarddiagonal	Lightdownwarddiagonal
Hatchstylelighthorizontal	Lighthorizontal	Specifies a horizontal line with an angle of 50% smaller than the horizontal.
Hatchstylelightupwarddiagonal	Lightupwarddiagonal	Specifies a diagonal from the vertex to the left, with an angle of 50% smaller than the backwarddiagonal, but these lines are not jagged.
Hatchstylelightvertical	Lightvertical	Specifies that the angle between the two sides of the vertical line is 50% smaller than vertical.
Hatchstylemax	Max	Specifies the shadow style Soliddiamond.
Hatchstylemin	Min	Specifies the shadow style horizontal.
Hatchstylenarrowhorizontal	Narrowhorizontal	Specifies that the side angles of the horizontal line are smaller than the shadow style horizontal 75% (or 25% smaller than the lighthorizontal).
Hatchstylenarrowvertical	Narrowvertical	Specifies that the angle between the two sides of the vertical line is smaller than the shadow style vertical 75% (or 25% smaller than the lightvertical).
Hatchstyleoutlineddiamond	Outlineddiamond	Specifies forward diagonal and reverse diagonal lines that intersect with each other, but these diagonals are not antialiasing.
HatchStylePercent05	Percent05	Specifies a 5% shadow. The foreground and background colors are 5:100.
HatchStylePercent10	Percent10	Specifies a 10% shadow. The foreground and background colors are 10:100.
HatchStylePercent20	Percent20	Specifies a 20% shadow. The foreground and background colors are 20:100.
HatchStylePercent25	Percent25	Specifies a 25% shadow. The foreground and background colors are 25:100.
HatchStylePercent30	Percent30	Specifies a 30% shadow. The foreground and background colors are 30:100.
HatchStylePercent40	Percent40	Specifies a 40% shadow. The foreground and background colors are 40:100.
HatchStylePercent50	Percent50	Specifies a 50% shadow. The foreground and background colors are 50:100.
HatchStylePercent60	Percent60	Specifies a 60% shadow. The foreground and background colors are 60:100.
HatchStylePercent70	Percent70	Specifies a 70% shadow. The foreground and background colors are 70:100.
HatchStylePercent75	Percent75	Specifies a 75% shadow. The foreground and background colors are 75:100.
HatchStylePercent80	Percent80	Specifies a 80% shadow. The foreground and background colors are 80:100.
HatchStylePercent90	Percent90	Specifies a 90% shadow. The foreground and background colors are 90:100.
Hatchstyleplaid	Plaid	Specifies a shadow that has the appearance of a plaid material.
Hatchstyleshingle	Shingle	Specifies a shadow with the appearance of a diagonal layered pebble, which tilts to the right from the vertex to the point.
Hatchstylesmallcheckerboard	Smallcheckerboard	Specifies a shadow with a checkerboard appearance.
Hatchstylesmallconfetti	Smallconfetti	Specifies a shadow with a multicolored confetti appearance.
Hatchstylesmallgrid	Smallgrid	Specifies horizontal and vertical lines that intersect each other, with an angle that is 50% smaller than the shadow style cross.
Hatchstylesoliddiamond	Soliddiamond	Specifies a shadow that has a checkerboard appearance placed diagonally.
Hatchstylesphere	Sphere	Specifies a shadow that has the appearance of the sphere adjacent to each other.
Hatchstyletrellis	Trellis	Specifies a shadow with a frame appearance.
Hatchstylevertical	Vertical	The pattern of the vertical line.
Hatchstylewave	Wave	Specifies the horizontal line that is formed by the tilde "~".
Hatchstyleweave	Weave	Specifies a shadow with a fabric look.
Hatchstylewidedownwarddiagonal	Widedownwarddiagonal	Specifies the diagonal from the vertex to the right, with the same spacing as the shadow style forwarddiagonal, which is three times times the width, but not jagged.
Hatchstylewideupwarddiagonal	Wideupwarddiagonal	Specifies a diagonal line from vertex to bottom to the left, with the same spacing as the shadow style backwarddiagonal, three times times the width, but not jagged.
Hatchstylezigzag	Zigzag	Specifies a horizontal line formed by a zigzag.