如何改变hint的字体和色彩

Question

aa

Answer 1

(1).在Uses中加入JPEG单元;
(2).定义一个全程变量,例如varAJPEG:TJPEGImage;
(3).在Form的OnCreate事件中加入:
Canvas.Pen.Color:=clBlack;
Canvas.Pen.Style:=psSolid;
Canvas.Brush.color:=clBtnFace;
Canvas.Brush.Style:=bsSolid;//此上是设置Canvas的一些属性,便于以后
//ClearFormandLoadanewJPEGfile;
AJpeg:=TJpegImage.Create;//动态生成AJpeg;
AJpeg.LoadFromFile('D:.jpg')//生成AJpeg后,调入JPEG文件;
(4).在Form的OnPain事件中加入
Canvas.Rectangle(2,2,560,430);//画一个黑框的矩形将图片围住;
x:=10;y:=10;
Form1.Canvas.Draw(x,y,AJpeg);//以(x,y)为左上角输出JPEG文件;
//实际上其作用是当图形被破坏是使图形恢复;
(5).在'Load'或'Browse'按钮的OnClick事件中加入:
begin
ifOpenPictureDialog1.Executethen
begin
AJpeg.Free;//释放旧AJpeg;
AJpeg:=TJpegImage.Create;//产生一个新的AJpeg;
AJpeg.LoadFromFile(OpenPictureDialog1.Filename);//载入JPEG文件;
end;
Canvas.Rectangle(2,2,560,430);//将FormClear;
x:=10;
y:=10;
Form1.Canvas.Draw(x,y,AJpeg);//显示新的AJpeg;
end;

Answer 2

参考一下：
unit Unit1;interfaceuses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;
type
  TMyHintWindow = class(Thintwindow)
  protected
    procedure Paint; override;
  public
    constructor Create(AOwner: TComponent); override;
  end;
type
  TForm1 = class(TForm)
    Button1: TButton;
    Edit1: TEdit;
  private
    { Private declarations }  public
    { Public declarations }
  end;var
  Form1: TForm1;implementation{$R *.dfm}{ TMyHintWindow }constructor TMyHintWindow.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  Canvas.Font.Color := $0000FF00;
end;procedure TMyHintWindow.Paint;
var
  R: TRect;
begin
  R := ClientRect;
  Inc(R.Left, 2);
  Inc(R.Top, 2);
  Canvas.Font.Color := $0000FF00;
  DrawText(Canvas.Handle, PChar(Caption), -1, R, DT_LEFT or DT_NOPREFIX or
    DT_WORDBREAK or DrawTextBiDiModeFlagsReadingOnly);end;
initialization
  application.ShowHint := false;
  HintWindowClass := TMyHintWindow;
  application.ShowHint := true;
end.

Answer 3

哈哈。。楼上的兄弟，好像这是我给你的答复吧
http://expert.csdn.net/Expert/topic/1972/1972303.xml?temp=.86401