我想根据所选组件在我的自定义页面(VST2DirPage
)上禁用控件。我试过了这个条件:
if IsComponentSelected('VST64') then
begin
VST2DirPage.Buttons[0].Enabled := False;
VST2DirPage.PromptLabels[0].Enabled := False;
VST2DirPage.Edits[0].Enabled := False;
end
但是元素似乎总是被禁用,所以看起来它没有正确的值才能正常工作。下面的脚本:
[Types]
Name: "full"; Description: "{code:FullInstall}";
Name: "custom"; Description: "{code:CustomInstall}"; Flags: iscustom
[Components]
Name: "VST64"; Description: "64-bit VST2"; Types: full; Check: Is64BitInstallMode
Name: "VST"; Description: "32-bit VST2"; Types: full; Check: Is64BitInstallMode
Name: "VST"; Description: "32-bit VST2"; Types: full; Check: not Is64BitInstallMode
[Code]
var VST2DirPage: TInputDirWizardPage;
procedure InitializeWizard;
begin
VST2DirPage := CreateInputDirPage(wpSelectComponents,
'Confirm VST2 Plugin Directory', '',
'Select the folder in which setup should install the VST2 Plugin, then click Next.',
False, '');
VST2DirPage.Add('64-bit folder');
VST2DirPage.Values[0] := ExpandConstant('{reg:HKLM\SOFTWARE\VST,VSTPluginsPath|{pf}\Steinberg\VSTPlugins}');
VST2DirPage.Add('32-bit folder');
VST2DirPage.Values[1] := ExpandConstant('{reg:HKLM\SOFTWARE\WOW6432NODE\VST,VSTPluginsPath|{pf32}\Steinberg\VSTPlugins}');
if not Is64BitInstallMode then
begin
VST2DirPage.Buttons[0].Enabled := False;
VST2DirPage.PromptLabels[0].Enabled := False;
VST2DirPage.Edits[0].Enabled := False;
end;
end;
答案 0 :(得分:1)
InitializeWizard
event function。此时,您还不知道用户将选择哪些组件。
您必须更新控件'只有当您知道选择了哪些组件时,才会声明:
这显示了后一种方法(使用CurPageChanged
event function实现):
procedure CurPageChanged(CurPageID: Integer);
begin
if CurPageID = VST2DirPage.ID then
begin
VST2DirPage.Buttons[0].Enabled := not IsComponentSelected('VST64');
VST2DirPage.PromptLabels[0].Enabled := VST2DirPage.Buttons[0].Enabled;
VST2DirPage.Edits[0].Enabled := VST2DirPage.Buttons[0].Enabled;
end;
end;
请注意,上面的代码不仅会在选择组件时禁用控件。如果用户返回"选择组件" 页面并取消选择该组件,它也会重新启用它们。
另见类似问题:
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