我做了一个学校查询系统的小程序,ComeInForm是它的登陆窗口,也就是一个输入密码进入系统的窗体,其他几个Form都是登陆后链接上的一些窗体,但不知为何会出现以下错误.Edit1.Text中的值就是密码输入框.
另外,我还想请教一下Application.Create(TMainForm,MainForm)起着一个什么样的作用.谢谢!
if (Edit1.Text='123') OR (Edit1.Text=Memo1.Lines.Text) then
begin Application.Create(TMainForm,MainForm);
Application.Create(TUpDataModule1,UpDataModule1);
Application.Create(TQueryForm,QueryForm);
Application.Create(TPasswordForm,PasswordForm);
Application.Create(TDataModule1,DataModule1);
Application.Create(TDataUpdataForm,DataUpdataForm);
ComeInForm.Hide;
MainForm.Show;
end[Error] Unit_Load.pas(43): Incompatible types: 'TComponent' and 'Class reference'
[Error] Unit_Load.pas(44): Incompatible types: 'TComponent' and 'Class reference'
[Error] Unit_Load.pas(45): Incompatible types: 'TComponent' and 'Class reference'
[Error] Unit_Load.pas(46): Incompatible types: 'TComponent' and 'Class reference'
[Error] Unit_Load.pas(47): Incompatible types: 'TComponent' and 'Class reference'
[Error] Unit_Load.pas(48): Incompatible types: 'TComponent' and 'Class reference'
另外,我还想请教一下Application.Create(TMainForm,MainForm)起着一个什么样的作用.谢谢!
if (Edit1.Text='123') OR (Edit1.Text=Memo1.Lines.Text) then
begin Application.Create(TMainForm,MainForm);
Application.Create(TUpDataModule1,UpDataModule1);
Application.Create(TQueryForm,QueryForm);
Application.Create(TPasswordForm,PasswordForm);
Application.Create(TDataModule1,DataModule1);
Application.Create(TDataUpdataForm,DataUpdataForm);
ComeInForm.Hide;
MainForm.Show;
end[Error] Unit_Load.pas(43): Incompatible types: 'TComponent' and 'Class reference'
[Error] Unit_Load.pas(44): Incompatible types: 'TComponent' and 'Class reference'
[Error] Unit_Load.pas(45): Incompatible types: 'TComponent' and 'Class reference'
[Error] Unit_Load.pas(46): Incompatible types: 'TComponent' and 'Class reference'
[Error] Unit_Load.pas(47): Incompatible types: 'TComponent' and 'Class reference'
[Error] Unit_Load.pas(48): Incompatible types: 'TComponent' and 'Class reference'
你应该把if then
写在你的button单击事件里
只不过我从里面考了这一部分,谢谢,请指教!
不要在FormCreat中写
对于要首先出现登录窗口的,应该把project.pas里的创建其他窗口的代码删掉,保留用与创建datamodule,以及comeinform,然后在密码验证成功后加上
Application.createform(Tmainform,mainform);
改为Application.CreateForm(TmainForm,MainForm);
注意先去采单栏上的project——options——把mainform移到available forms里
改为Application.CreateForm(TmainForm,MainForm);
但不知道是什么原因,请指教.