wait.pas

本图书管理系统一sql server为数据库开发平台

unit Wait;
interface

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

type
  TWaitForm = class(TForm)
    Label1: TLabel;
    Timer1: TTimer;
    Button1: TButton;
    procedure CreateParams(var Params: TCreateParams); override;
    procedure FormCreate(Sender: TObject);
    procedure FormShow(Sender: TObject);
    procedure Timer1Timer(Sender: TObject);
    procedure Button1Click(Sender: TObject);
 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 TWaitForm.WMNCLBUTTONDBLCLK1(var msg:Tmessage);
begin
  //
end;
procedure TWaitForm.Active(var msg:Tmessage);
begin
  self.WMPAINT1(msg);
end;

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

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

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

procedure TWaitForm.FormShow(Sender: TObject);
begin
  timer1.Enabled:=true;
  button1.Enabled:=false;
end;

procedure TWaitForm.Timer1Timer(Sender: TObject);
begin
  if strtoint(button1.Caption)>0 then
    button1.Caption:=inttostr(strtoint(button1.Caption)-1)
  else
  begin
    button1.Enabled:=true;
    button1.Caption:='关闭';
    timer1.Enabled:=false;
  end;

end;

procedure TWaitForm.Button1Click(Sender: TObject);
begin
  close;
end;

end.