1\u3001\u76f4\u63a5\u8c03\u7528 ShowModal \u80af\u5b9a\u662f\u4e0d\u884c\u7684\uff0cAndroid \u4e0b\u76f4\u63a5\u629b\u51fa\u5f02\u5e38\u3002\u800c iOS\u3001OSX\u3001Windows \u4e0b\u662f\u6ca1\u95ee\u9898\u7684\u3002<\/p>\n
2\u3001\u50cf\u4e0b\u9762\u8fd9\u6837\u7528\u5faa\u73af\u6a21\u62df ShowModal \u4e5f\u662f\u4e0d\u884c\u7684\uff0c\u5982\u679c\u53ea\u662f\u8fd9\u4e48\u7b80\u5355\uff0cDelphi \u65e9\u5c31\u5b9e\u73b0\u4e86\u3002\u8fd9\u4e2a\u4ee3\u7801\u5728\u6211\u624b\u673a\u4e0a\u5b9e\u6d4b\u5b58\u5728\u7684\u4e3b\u8981\u95ee\u9898\u5c31\u662f\u4f60\u6309\u56de\u9000\u952e\u6ca1\u54cd\u5e94\u3002<\/p>\n
var\r\n F:TForm2;\r\nbegin\r\nF:=TForm2.Create(nil);\r\nF.Show;\r\nwhile F.Visible and (F.ModalResult=mrNone) do\r\n begin\r\n Application.ProcessMessages;\r\n Sleep(10);\r\n end;\r\nFreeAndNil(F);\r\nend;<\/pre>\n3\u3001\u50cf\u4e0b\u9762\u7684\u7528\u6cd5\u4e5f\u662f\u9519\u8bef\u7684\uff1a<\/p>\n
procedure TForm1.Button1Click(Sender:TObject)\r\nvar\r\n dlg: TForm2;\r\nbegin\r\n dlg := TForm2.Create(nil);\r\n dlg.ShowModal(\r\n procedure(ModalResult: TModalResult)\r\n begin\r\n if ModalResult = mrOK then\r\n if dlg.ListBox1.ItemIndex >= 0 then\r\n edit1.Text := dlg.ListBox1.Items [dlg.ListBox1.ItemIndex];\r\n dlg.DisposeOf;\r\n end);\r\nend;<\/pre>\n\u8fd9\u4e2a\u7684\u95ee\u9898\u5728\u4e8e dlg \u662f\u5c40\u90e8\u53d8\u91cf\uff0cShowModal \u56de\u8c03\u7684\u533f\u540d\u51fd\u6570\u91cc\u8bbf\u95eeButton1Click \u91cc\u7684\u5c40\u90e8\u53d8\u91cf\u662f\u4e0d\u5b89\u5168\u7684\uff08\u6808\u53ef\u80fd\u5df2\u7ecf\u9519\u4e71\uff09\u3002\u8fd9\u5757 FMX \u7684\u8bbe\u8ba1\u771f\u662f\u4e00\u4e2a\u8d25\u7b14\uff0c\u5e94\u8be5\u52a0\u5165\u5b9e\u4f8b\u7684\u5730\u5740\u3002\u5f53\u7136\u4e86\uff0c\u5982\u679c dlg \u662f\u4e00\u4e2a\u5168\u5c40\u53d8\u91cf\uff0c\u4e0a\u9762\u7684\u4ee3\u7801\u5c31\u4e0d\u5b58\u5565\u95ee\u9898\u4e86\u3002<\/p>\n
\u6b63\u786e\u7684\u7528\u6cd5\uff1a<\/p>\n
\u597d\u5427\uff0c\u5f97\u7f6a\u4e86\u4eba\uff0c\u6279\u5224\u4e86\u522b\u4eba\u7684\u4e0d\u5bf9\uff0c\u603b\u5f97\u7ed9\u51fa\u4e00\u4e2a\u5bf9\u7684\u65b9\u6cd5\u5427\u3002\u8fd9\u4e2a\u65b9\u6cd5\u5b9e\u9645\u4e0a\u4e5f\u8bf4\u4e0d\u4e0a\u771f\u6b63\u7684\u5bf9\uff0c\u6211\u6682\u65f6\u79f0\u4e4b\u4e3a\u5bf9\u662f\u56e0\u4e3a\u8fd9\u662f\u76ee\u524d\u6211\u80fd\u60f3\u5230\u7684\u76f8\u5bf9\u5b8c\u7f8e\u7684\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n
type\r\n TFormModalProc = reference to procedure(F: TForm);\r\n\r\n TFormModalHook = class(TComponent)\r\n private\r\n FForm: TForm;\r\n FCloseAction: TCloseAction;\r\n FOldClose: TCloseEvent;\r\n FResultProc: TFormModalProc;\r\n procedure DoFormClose(Sender: TObject; var Action: TCloseAction);\r\n public\r\n constructor Create(AOwner: TComponent); override;\r\n procedure ShowModal(AResult: TFormModalProc);\r\n end;\r\n\r\nprocedure ModalDialog(F: TForm; OnResult: TFormModalProc;\r\n ACloseAction: TCloseAction = TCloseAction.caFree);\r\nvar\r\n AHook: TFormModalHook;\r\nbegin\r\n AHook := TFormModalHook.Create(F);\r\n AHook.FCloseAction := ACloseAction;\r\n AHook.ShowModal(OnResult);\r\nend;\r\n\r\n{ TFormModalHook }\r\n\r\nconstructor TFormModalHook.Create(AOwner: TComponent);\r\nbegin\r\n inherited Create(AOwner);\r\n FForm := AOwner as TForm;\r\n FOldClose := FForm.OnClose;\r\n FForm.OnClose := DoFormClose;\r\n FCloseAction := TCloseAction.caFree;\r\nend;\r\n\r\nprocedure TFormModalHook.DoFormClose(Sender: TObject; var Action: TCloseAction);\r\nbegin\r\n if FForm.ModalResult = mrNone then\r\n FForm.ModalResult := mrCancel;\r\n Action := FCloseAction;\r\n if Assigned(FOldClose) then\r\n FOldClose(Sender, Action);\r\nend;\r\n\r\nprocedure TFormModalHook.ShowModal(AResult: TFormModalProc);\r\nbegin\r\n FResultProc := AResult;\r\n{$IFDEF ANDROID}\r\n FForm.ShowModal(\r\n procedure(AResult: TModalResult)\r\n var\r\n AHook: TFormModalHook;\r\n AForm: TForm;\r\n I: Integer;\r\n AChild: TComponent;\r\n begin\r\n if Screen.ActiveForm is TForm then\r\n AForm := Screen.ActiveForm as TForm\r\n else\r\n begin\r\n raise Exception.Create('You should not in here.');\r\n end;\r\n if Assigned(AForm) then\r\n begin\r\n AForm.OnClose := FOldClose;\r\n for I := 0 to AForm.ComponentCount - 1 do\r\n begin\r\n AChild := FForm.Components[I];\r\n if AChild is TFormModalHook then\r\n begin\r\n (AChild as TFormModalHook).FResultProc(AForm);\r\n FreeAndNil(AChild);\r\n Break;\r\n end;\r\n end;\r\n end;\r\n end);\r\n{$ELSE}\r\n FForm.ShowModal;\r\n FResultProc(FForm);\r\n{$ENDIF}\r\nend;<\/pre>\n\u597d\u5427\uff0c\u4ee3\u7801\u770b\u8d77\u6765\u6709\u70b9\u591a\uff0c\u591a\u5c31\u591a\u5427\u3002\u7528\u6cd5\u5f88\u7b80\u5355\uff0c\u7528\u5b83\u66ff\u6362 TForm.ShowModal \u65b9\u6cd5\uff0c\u5982\uff1a<\/p>\n
procedure TForm1.Button1Click(Sender: TObject);\r\nvar\r\n F: TForm2;\r\nbegin\r\n F := TForm2.Create(nil);\r\n ModalDialog(F,\r\n procedure(AForm: TForm)\r\n begin\r\n ShowMessage(AForm.Name + ' Modal result ready');\r\n end);\r\nend;<\/pre>\n\u3010\u6ce8\u610f\u3011<\/strong><\/p>\n
\u4e0d\u8981\u5728 ModalDialog \u7684\u56de\u8c03\u51fd\u6570\u4e2d\uff0c\u5728\u53ef\u80fd\u5f15\u53d1\u6d88\u606f\u5faa\u73af\u5904\u7406\u7684\u5730\u65b9\uff0c\u5982\uff1aShowMessage\/MessageDlg\/ProcessMessages \u7b49\u51fd\u6570\u7684\u540e\u9762\u518d\u5f15\u7528 AForm \u7684\u5730\u5740\uff0c\u56e0\u4e3a\u5728 FMX \u6846\u67b6\u4e0b\uff0c\u5b83\u5f88\u53ef\u80fd\u4f1a\u88ab\u91ca\u653e\u6389\u4e86\u3002<\/strong><\/p>\n
\u5b8c\u6574\u7684\u5355\u5143\u8bf7\u52a0\u5b98\u65b9\u7fa4\uff08250530692\uff09\u6216\u4ece SVN \u540c\u6b65\u4e0b\u8f7d<\/p>\n","protected":false},"excerpt":{"rendered":"
1\u3001\u76f4\u63a5\u8c03\u7528 ShowModal \u80af\u5b9a\u662f […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[145,69,8,21],"tags":[457,149,561],"class_list":["post-3588","post","type-post","status-publish","format-standard","hentry","category-android","category-c-builder","category-delphi","category-misc","tag-android","tag-fmx","tag-showmodal"],"views":6789,"_links":{"self":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/3588","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3588"}],"version-history":[{"count":2,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/3588\/revisions"}],"predecessor-version":[{"id":3590,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=\/wp\/v2\/posts\/3588\/revisions\/3590"}],"wp:attachment":[{"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3588"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3588"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.qdac.cc\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3588"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}