Inno Setup-创建具有输入长度和格式限制的用户输入查询页面并使用输入 [英] Inno Setup - Create User Input Query Page with input length and format limit and use the input

问题描述

因此，正如标题所述，我想创建一个用户输入查询页面(这很简单)，但是随后我希望该字段拒绝空格字符并将输入限制为不超过15个字符(有点对我来说更困难).但是然后我需要将输入写到文件中，我也不知道该怎么做.

So, as the title says, I want to create a User Input Query Page (that's easy), but then I want the field to reject space character(s) and limit the input to no more than 15 characters (a bit more difficult for me). But then I need to write the input to a file, which I'm also not sure how to do.

这是我的代码现在的样子:

Here's what my code looks like now:

var
  Page: TInputQueryWizardPage;

Procedure InitializeWizard();
Begin
  Page := CreateInputQueryPage(wpSelectTasks, 'Choose a Profile Name', 'This name will be used as your Profile Name', 'Please specify a name to be used as your Profile Name (make sure it''s unique), then click Next.');
  Page.Add('Name:', False);
  Page.Values[0] := 'YourName';
End;

function GetUserInput(param: String): String;
Begin
  result := Page.Values[0];
End;

如您所见，此代码对字符没有任何限制.这是我需要帮助的第一件事.

As you can see, this code has no limitations for characters. That's the first thing I need help with.

我的第二个问题是写那个值.

My second problem is writing that value.

我再次使用非标准的INI文件，不是我的错.因此，该文件与标准INI非常相似，只是没有节，只有键和值. Inno Setup自己的INI部分对我没有用，因为它不允许在部分的外部"输入，因此我想我必须将其视为文本文件(?).

I am once again working with a non-standard INI file, not my fault. So this file is pretty much similar to a standard INI, it just doesn't have sections, just keys and values. Inno Setup's own INI section is of no use to me, since it won't allow input "outside" of a section, so I guess I'll have to treat it a text file(?).

我需要将结果作为值写入名为配置文件名称"的键.

I need to write the result as value to a key, named 'profile name'.

推荐答案

长度限制很简单，请使用TPasswordEdit.MaxLength属性.

The length limit is easy, use TPasswordEdit.MaxLength property.

为防止用户键入空格，请在TEdit.OnKeyPress事件中对其进行过滤.

To prevent the user from typing a space, filter it in TEdit.OnKeyPress event.

但是无论如何，您最终都必须明确检查空格，因为例如也可以从剪贴板粘贴空格.对于最终检查，请使用TWizardPage.OnNextButtonClick事件.

But you need to check explicitly for spaces in the end anyway, because the spaces can also be pasted from clipboard for example. For a final check, use TWizardPage.OnNextButtonClick event.

var
  Page: TInputQueryWizardPage;

{ Prevent user from typing spaces ... }
procedure EditKeyPress(Sender: TObject; var Key: Char);
begin
  if Key = ' ' then Key := #0;
end;

{ ... but check anyway if some spaces were sneaked in }
{ (e.g. by pasting from a clipboard) }
function ValidateInput(Sender: TWizardPage): Boolean;
begin
  Result := True;

  if Pos(' ', Page.Values[0]) > 0 then
  begin
    MsgBox('Profile Name cannot contain spaces.', mbError, MB_OK);
    Result := False;
  end;
end;

procedure InitializeWizard();
begin
  Page := CreateInputQueryPage(...);
  Page.OnNextButtonClick := @ValidateInput;
  Page.Add('Name:', False);
  Page.Edits[0].MaxLength := 15;
  Page.Edits[0].OnKeyPress := @EditKeyPress;
  Page.Values[0] := 'YourName';
  ...
end;

---

另一种可能性是实施OnChange.
请参见输入无效时，Inno Setup禁用下一步"按钮.

---

Another possibility is to implement the OnChange.
See Inno Setup Disable Next button when input is not valid.

您已经知道，要使用输入的值，请通过Page.Values[0]进行访问.

As you already know, to use the entered value, access it via Page.Values[0].

格式化自定义INI文件格式的值是一个完全不同的问题，问一个.

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