不知道你的登录事件怎么控制的 (转摘)
假设LoginForm 上有一个 edtUserName 和 edtPswd Edit控件和
一个 btnOk,和btnCancel 按钮 在btnOk按钮事件里判断用户合法性
不合法则重新输入,如果点btnCancel或者直接关闭窗口表示用户放弃
进入
则可以用下面的方法:
1. 把btnCancel的ModalResult 属性设为mrCancel 或者在其OnClick事件
里写 ModalResult := mrCancel;
2. btnOk的OnClick 事件里进行合法性校验
........
if 合法 then begin
end
...... ;
ModalResult := mrOk ;
else begin
end ;
3. function TLoginForm.Login :Boolean ;
begin
Result := ShowModal = mrOk ;
end; 4. .dpr文件
begin
Form2:= TForm2.Create(Application) ;
if form2.Login then begin
Application.Initialize;
Application.Create(TMainForm,MainForm);
........
end ;
假设LoginForm 上有一个 edtUserName 和 edtPswd Edit控件和
一个 btnOk,和btnCancel 按钮 在btnOk按钮事件里判断用户合法性
不合法则重新输入,如果点btnCancel或者直接关闭窗口表示用户放弃
进入
则可以用下面的方法:
1. 把btnCancel的ModalResult 属性设为mrCancel 或者在其OnClick事件
里写 ModalResult := mrCancel;
2. btnOk的OnClick 事件里进行合法性校验
........
if 合法 then begin
end
...... ;
ModalResult := mrOk ;
else begin
end ;
3. function TLoginForm.Login :Boolean ;
begin
Result := ShowModal = mrOk ;
end; 4. .dpr文件
begin
Form2:= TForm2.Create(Application) ;
if form2.Login then begin
Application.Initialize;
Application.Create(TMainForm,MainForm);
........
end ;
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Forms,
SysUtils,
dialogs,
gagl_main in 'gagl_main.pas' {main},
w_dmwh in 'w_dmwh.pas' {wdmwh},
m_gbjbxx in 'm_gbjbxx.pas' {m_gbjbxxform},
m_grjledit in 'm_grjledit.pas' {grjledit},
m_dajyedit in 'm_dajyedit.pas' {dajyedit},
m_jtqk in 'm_jtqk.pas' {jtqkedit},
m_clsjedit in 'm_clsjedit.pas' {clsjedit},
m_dazledit in 'm_dazledit.pas' {dazledit},
m_dazdedit in 'm_dazdedit.pas' {dazdedit},
m_zpgrjl in 'm_zpgrjl.pas' {zpgrjl},
m_grjldy in 'm_grjldy.pas' {grjldy},
m_dajydy in 'm_dajydy.pas' {dajydy},
m_clsjdy in 'm_clsjdy.pas' {clsjdy},
m_dazldy in 'm_dazldy.pas' {dazldy},
m_dazddy in 'm_dazddy.pas' {dazddy},
w_gbbdedt in 'w_gbbdedt.pas' {gbbdform},
dy_gbllb_2Unit in 'dy_gbllb_2Unit.pas' {dy_gbllb_2form},
dy_gbllb_3Unit in 'dy_gbllb_3Unit.pas' {dy_gbllb_3form},
dy_gbllb_4Unit in 'dy_gbllb_4Unit.pas' {dy_gbllb_4form},
dy_gbllb_5Unit in 'dy_gbllb_5Unit.pas' {dy_gbllb_5form},
dy_gbllb_6Unit in 'dy_gbllb_6Unit.pas' {dy_gbllb_6form},
dy_gbllb_7Unit in 'dy_gbllb_7Unit.pas' {dy_gbllb_7form},
dy_gbllb_8Unit in 'dy_gbllb_8Unit.pas' {dy_gbllb_8form},
dy_gbllb_9Unit in 'dy_gbllb_9Unit.pas' {Form17},
dy_gbllbUnit in 'dy_gbllbUnit.pas' {dy_gbllbform},
dy_gbllUnit in 'dy_gbllUnit.pas' {Form18},
dy_gbrmcb in 'dy_gbrmcb.pas' {Form3},
dy_gbrmcb_1 in 'dy_gbrmcb_1.pas' {Form4},
dy_gbrmcb_2 in 'dy_gbrmcb_2.pas' {Form5},
dy_gbrmcb_3 in 'dy_gbrmcb_3.pas' {Form6},
dy_gbrmcb_4 in 'dy_gbrmcb_4.pas' {Form7},
dy_gbrmcb_5 in 'dy_gbrmcb_5.pas' {Form8},
dy_gbrmcb_6 in 'dy_gbrmcb_6.pas' {Form9},
dy_gbrmcb_7 in 'dy_gbrmcb_7.pas' {dy_gbrmcb_7form},
dy_gbrmcbUnit in 'dy_gbrmcbUnit.pas' {dy_gbrmcbform},
dy_jbqk in 'dy_jbqk.pas' {Form1},
dy_jyd in 'dy_jyd.pas' {dyjyd},
dy_zwbdb in 'dy_zwbdb.pas' {dyzwbdb},
dy_gbllb_1Unit in 'dy_gbllb_1Unit.pas' {dy_gbllb_1form},
w_gbzwbddj in 'w_gbzwbddj.pas' {m_gbzwbddj},
w_zwbd in 'w_zwbd.pas' {zwbd},
m_gzbd in 'm_gzbd.pas' {gzbd},
m_gzbdedit in 'm_gzbdedit.pas' {gzbdedit},
m_splash in 'm_splash.pas' {splashfrm},
m_dlUnit in 'm_dlUnit.pas' {gagl_dl},
w_yhsz in 'w_yhsz.pas' {yhsz},
m_gbxxqk in 'm_gbxxqk.pas' {gbxxqk},
m_zx in 'm_zx.pas' {zx},
m_dyjbxxUnit in 'm_dyjbxxUnit.pas' {m_dyjbxxform},
m_dyjbxxczUnit in 'm_dyjbxxczUnit.pas' {m_dyjbxxczform},
m_dzjbxxUnit in 'm_dzjbxxUnit.pas' {m_dzjbxxform},
m_dzxxczUnit in 'm_dzxxczUnit.pas' {m_dzxxczForm},
m_dzbmxzUnit in 'm_dzbmxzUnit.pas' {m_dzbmxzform},
m_sjdybmUnit in 'm_sjdybmUnit.pas' {m_sjdybmform};{$R *.RES}var
count:integer;
begin
Application.Initialize;
splashfrm:=tsplashfrm.create(application);
splashfrm.show;
splashfrm.update;
for count:=0 to 400000000 do
begin
end;
splashfrm.hide;
splashfrm.free;
gagl_dl:=Tgagl_dl.Create(application);
gagl_dl.Showmodal;
if gagl_dl.dl=false then
begin
exit;
application.Terminate;
end;
Application.CreateForm(Tmain, main);
Application.CreateForm(Tdyzwbdb, dyzwbdb);
Application.CreateForm(Tm_dzbmxzform, m_dzbmxzform);
Application.CreateForm(Tm_sjdybmform, m_sjdybmform);
main.dwmc:=gagl_dl.combobox1.text;
main.czsj:=datetostr(gagl_dl.DateTimePicker1.date);
Application.CreateForm(TForm18, Form18);
Application.CreateForm(TForm3, Form3);
Application.CreateForm(TForm4, Form4);
Application.CreateForm(TForm5, Form5);
Application.CreateForm(TForm7, Form7);
Application.CreateForm(TForm6, Form6);
Application.CreateForm(TForm9, Form9);
Application.CreateForm(TForm17, Form17);
Application.CreateForm(TForm8, Form8);
Application.CreateForm(TForm1, Form1);
Application.CreateForm(Tdy_gbllb_1form, dy_gbllb_1form);
Application.CreateForm(Tdy_gbrmcbform, dy_gbrmcbform);
Application.CreateForm(Tdy_gbrmcb_7form, dy_gbrmcb_7form);
Application.CreateForm(Tdy_gbllbform, dy_gbllbform);
Application.CreateForm(Tdy_gbllb_8form, dy_gbllb_8form);
Application.CreateForm(Tdy_gbllb_7form, dy_gbllb_7form);
Application.CreateForm(Tdy_gbllb_6form, dy_gbllb_6form);
Application.CreateForm(Tdy_gbllb_5form, dy_gbllb_5form);
Application.CreateForm(Tdy_gbllb_4form, dy_gbllb_4form);
Application.CreateForm(Tdy_gbllb_3form, dy_gbllb_3form);
Application.CreateForm(Tdy_gbllb_2form, dy_gbllb_2form);
Application.Run;
end.
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
unit m_dlUnit;interfaceuses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
Db, DBTables, StdCtrls, Buttons, ComCtrls, jpeg, ExtCtrls,Registry;type
Tgagl_dl = class(TForm)
Label4: TLabel;
Bevel1: TBevel;
Label1: TLabel;
Label2: TLabel;
Label3: TLabel;
Image1: TImage;
Label6: TLabel;
Label7: TLabel;
Edit1: TEdit;
DateTimePicker1: TDateTimePicker;
BitBtn1: TBitBtn;
BitBtn2: TBitBtn;
BitBtn3: TBitBtn;
Query1: TQuery;
Database1: TDatabase;
Label8: TLabel;
ComboBox1: TComboBox;
procedure BitBtn3Click(Sender: TObject);
procedure BitBtn2Click(Sender: TObject);
procedure FormShow(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
dl:boolean;
end;var
gagl_dl: Tgagl_dl;implementation
{$R *.DFM}procedure Tgagl_dl.BitBtn3Click(Sender: TObject);
begin
dl:=false;
query1.close; //关闭数据集
end;procedure Tgagl_dl.BitBtn2Click(Sender: TObject);
begin
if combobox1.Text='' then
begin
application.MessageBox('请选择单位名称!','提示',mb_ok+mb_iconinformation);
exit;
end;
with query1 do //判断密码是否正确
begin
close;
sql.Clear;
sql.Add('select * from w_yhsz where');
sql.Add('(dwmc=:p_dwmc)'+'and'+'(mm=:p_mm)');
parambyname('p_dwmc').asstring:=combobox1.Text;
parambyname('p_mm').asstring:=edit1.text;
open;
if recordcount<>0 then //正确
begin
dl:=true;
gagl_dl.Close;
end
else //错误
begin
application.MessageBox('密码错误!','提示',mb_ok+mb_iconerror);
edit1.Text:='';
edit1.SetFocus;
exit;
end;
end;
end;procedure Tgagl_dl.FormShow(Sender: TObject);
var
i:integer;
reg:TRegistry;
begin
reg:=tRegistry.Create(); //配置数据库
with reg do
begin
try
rootkey:=HKEY_CURRENT_USER;
if openkey('\Software\ODBC\ODBC.INI\gars',true) then
begin
writestring('Datebase','gars');
writestring('Driver','C:\WINNT\System32\sqlsrv32.dll');
writestring('LastUser','sa');
writestring('Server','(local)');
end;
if openkey('\Software\ODBC\ODBC.INI\ODBC Data Sources',true) then
begin
writestring('gars','SQL Server');
end;
except
closekey;
free;
end;
end;
datetimepicker1.Date:=date; //当前日期
combobox1.Clear;
with query1 do
begin
close;
sql.Clear;
sql.Add('select distinct dwmc from w_yhsz');
open;
first;
if recordcount<>0 then
begin
for i:=0 to recordcount-1 do
begin
combobox1.Items.Add(fieldbyname('dwmc').asstring); //添加用户
next;
end;
end;
end;
end;end.
begin
ShowWindow(Handle, SW_NORMAL);
with TLoginForm.Create(Application) do
try
if ShowModal <> mrOK then
Application.Terminate;
finally
Release;
end;
end;