about.pas

本图书管理系统一sql server为数据库开发平台

unit About;
interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, ComCtrls, ToolWin,ExtCtrls,buttons, ADODB, ImgList,shellapi;

type
  TAboutForm = class(TForm)
    Panel1: TPanel;
    Image1: TImage;
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    Image2: TImage;
    StaticText1: TStaticText;
   procedure CreateParams(var Params: TCreateParams); override;
   procedure FormCreate(Sender: TObject);
    procedure Label3Click(Sender: TObject);
    procedure Label3MouseEnter(Sender: TObject);
    procedure Label3MouseLeave(Sender: TObject);
    procedure StaticText1Click(Sender: TObject);
    procedure StaticText1MouseDown(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer);
    procedure StaticText1MouseUp(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer);
 private
   procedure WMPAINT1(var msg:TMESSAGE);message WM_PAINT;
   procedure WMNCPAINT1(var msg:TWMNCPAINT);message WM_NCPAINT;
   procedure Active(var msg:Tmessage);message WM_ACTIVATE;
   procedure WMNCLBUTTONDBLCLK1(var msg:Tmessage);message WM_NCLBUTTONDBLCLK;
       { Private declarations }
  public
    titleBmp:Tbitmap;
    { Public declarations }
  end;


implementation

uses MainForm,DataModule;
{$R *.dfm}
procedure TAboutForm.WMNCLBUTTONDBLCLK1(var msg:Tmessage);
begin
  //
end;
procedure TAboutForm.Active(var msg:Tmessage);
begin
self.WMPAINT1(msg);
end;

procedure TAboutForm.CreateParams(var Params: TCreateParams);
begin
 inherited;
  params.Style:=params.Style-WS_SYSMENU;
end;

procedure TAboutForm.WMPAINT1(var msg:TMESSAGE);
begin
sendmessage(self.Handle,WM_NCPAINT,0,0);
inherited;
end;

procedure TAboutForm.WMNCPAINT1(var msg:TWMNCPAINT);
var
dc1:HDC;
y,frame:integer;
oldbrush:HBrush;
oldpen,pen:HPEN;
canvas:Tcanvas;
begin
canvas:=Tcanvas.Create;
dc1:=getwindowdc(Handle);
y:=GetSystemMetrics(SM_CYSIZE);
frame:=GetSystemMetrics(SM_CYSIZEFRAME);
  oldbrush:=selectobject(dc1,getstockobject(null_brush));
  pen:=createpen(PS_SOLID,1,rgb(155,155,155));
  oldpen:=selectobject(dc1,pen);
  RoundRect(dc1,0,0,Width,Height,12,12);
  pen:=createpen(PS_SOLID,frame*2-5,rgb(255,255,255));
  selectobject(dc1,pen);
  RoundRect(dc1,2,2,Width-2,Height-2,8,10);
StretchBlt(dc1,frame,frame,Width-2*frame,y+frame div 2,titlebmp.Canvas.Handle,0,0,titlebmp.Width,titlebmp.Height,srccopy);
canvas.Handle:=dc1;
canvas.Brush.Style:=bsclear;
canvas.TextOut(frame*3,(y-frame)div 2,self.Caption);
selectobject(dc1,oldbrush);
selectobject(dc1,oldpen);
deleteObject(pen);
canvas.Handle:=0;
canvas.Free;
releasedc(Handle,dc1);
end;

procedure TAboutForm.FormCreate(Sender: TObject);
begin
titlebmp:=Tbitmap.Create;
titlebmp.LoadFromResourceName(main.resource,'TItle');
end;

procedure TAboutForm.Label3Click(Sender: TObject);
begin
shellexecute(self.Handle,nil,'http://www.mingrisoft.com',nil,nil,sw_shownormal);
end;

procedure TAboutForm.Label3MouseEnter(Sender: TObject);
begin
label3.Font.Color:=clred;
end;

procedure TAboutForm.Label3MouseLeave(Sender: TObject);
begin
label3.Font.Color:=clBlack;
end;

procedure TAboutForm.StaticText1Click(Sender: TObject);
begin
close;
end;

procedure TAboutForm.StaticText1MouseDown(Sender: TObject;
  Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
begin
statictext1.BevelKind:=bkSoft;
end;

procedure TAboutForm.StaticText1MouseUp(Sender: TObject;
  Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
begin
statictext1.BevelKind:=bkTile;
end;

end.