unit1.pas

本图书管理系统一sql server为数据库开发平台

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, Grids, DBGrids, ComCtrls, ToolWin,
  ExtCtrls, XPMan;

type
  Tdialog = class(TForm)
    Label1: TLabel;
    Panel1: TPanel;
    Button1: TButton;
    Button2: TButton;
    procedure FormCreate(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
  private
   procedure WMPAINT(var msg:TMESSAGE);message WM_PAINT;
   procedure WMNCPAINT(var msg:TWMNCPAINT);message WM_NCPAINT;
   procedure Active(var msg:Tmessage);message WM_ACTIVATE;
   procedure CreateParams(var Params: TCreateParams); override;
   procedure WMNCLBUTTONDBLCLK(var msg:Tmessage);message WM_NCLBUTTONDBLCLK;
       { Private declarations }
  public
    { Public declarations }
  end;

var
  TitleBmp:Tbitmap;

function MyShowmessage(text:Pchar):boolean;

implementation

{$R *.dfm}
{$R mysource.RES}
procedure Tdialog.WMNCLBUTTONDBLCLK(var msg:Tmessage);
begin
//
end;
procedure Tdialog.Active(var msg:Tmessage);
begin
self.WMPAINT(msg);
end;
procedure Tdialog.CreateParams(var Params: TCreateParams);
begin
 inherited;
  params.Style:=params.Style-WS_SYSMENU;
end;

function MyShowmessage(Text:Pchar):boolean;
var
  dialog: Tdialog;
begin
  result:=false;
    dialog:=Tdialog.Create(nil);
  try
    dialog.Label1.caption:=string(text);
    dialog.ShowModal;
    if dialog.ModalResult = MRyEs then
      result:=true;
  finally
    dialog.Free;
  end;
end;
procedure Tdialog.WMPAINT(var msg:TMESSAGE);
begin
  inherited;
  sendmessage(self.Handle,WM_NCPAINT,0,0);
end;

procedure Tdialog.WMNCPAINT(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,frame*2,rgb(255,255,255));
  oldpen:=selectobject(dc1,pen);
  rectangle(dc1,0,0,Width,Height);
  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((y-frame)div 2,(y-frame)div 2,'提示');
  selectobject(dc1,oldbrush);
  selectobject(dc1,oldpen);
  deleteObject(pen);
  canvas.Handle:=0;
  canvas.Free;
  releasedc(Handle,dc1);
end;
procedure Tdialog.FormCreate(Sender: TObject);
begin
  titlebmp:=Tbitmap.Create;
  titlebmp.LoadFromResourceName(hinstance,'TItle');
end;

procedure Tdialog.FormDestroy(Sender: TObject);
begin
  titlebmp.free;
end;

end.