{"id":3747,"date":"2019-03-25T17:45:46","date_gmt":"2019-03-25T20:45:46","guid":{"rendered":"http:\/\/xexeu.elipse.com.br\/pt\/utilizando-os-metodos-getscreen-e-showscreen\/"},"modified":"2021-11-03T10:41:46","modified_gmt":"2021-11-03T13:41:46","slug":"utilizando-os-metodos-getscreen-e-showscreen","status":"publish","type":"post","link":"https:\/\/kb.elipse.com.br\/en\/utilizando-os-metodos-getscreen-e-showscreen\/","title":{"rendered":"Utilizando os m\u00e9todos GetScreen e ShowScreen."},"content":{"rendered":"<div align=\"justify\"><\/div>\n<div align=\"justify\">\n<p><b>Descri\u00e7\u00e3o:<\/b><\/p>\n<p>Como posso utilizar os m\u00e9todos <i>GetScreen <\/i>do Viewer e <i>ShowScreen <\/i>do Divisor? Para que eles servem?<br \/>\n<b><br \/>\nSolu\u00e7\u00e3o:<\/b><\/p>\n<p>O m\u00e9todo <i>GetScreen(ScreenName)<\/i> retorna um objeto Tela, cujo nome deve ser especificado no par\u00e2metro <i>ScreenName<\/i>. O valor de retorno deste m\u00e9todo pode ser utilizado no m\u00e9todo <i>ShowScreen <\/i>do objeto Divisor.<\/p>\n<p>J\u00e1 o m\u00e9todo <i>ShowScreen(Screen, Zoom, Scrollbars[, Arg])<\/i> carrega uma tela no Divisor, fechando a tela ou Quadro carregado anteriormente. O par\u00e2metro <i>Screen <\/i>somente aceita o objeto retornado pelo m\u00e9todo <i>GetScreen <\/i>do Viewer. Este m\u00e9todo falha caso seja utilizado um objeto Tela obtido a partir de outro m\u00e9todo ou propriedade, como por exemplo a propriedade <i>Screen<\/i>, comum a todos os objetos de tela.<\/p>\n<p>Para ilustrar a utilidade destes m\u00e9todos, imagine uma situa\u00e7\u00e3o onde seja necess\u00e1rio abrir uma tela e executar alguns scripts. Antes destes m\u00e9todos terem sido criados, era necess\u00e1rio um script para abertura da tela, e nesta tela um outro script (normalmente no evento de <i>OnPreShow<\/i>) para acessar seus objetos filhos.<\/p>\n<p>O problema com esta abordagem seria, por exemplo, a cria\u00e7\u00e3o de bibliotecas que dependem sempre da cria\u00e7\u00e3o deste script na aplica\u00e7\u00e3o, n\u00e3o permitindo o desenvolvimento de uma biblioteca capaz de reduzir problemas de acoplamento. Com os novos m\u00e9todos <i>GetScreen <\/i>e <i>ShowScreen<\/i>, \u00e9 poss\u00edvel realizar a chamada da abertura da tela por script, e antes que a tela seja aberta, receber o objeto Tela e acessar os objetos filhos desejados.<\/p>\n<p>A aplica\u00e7\u00e3o em anexo ilustra o uso de uma tela indexada janelada, que atribui o caminho do XObject associado ao XControl diretamente no script do evento <i>Click <\/i>do objeto, n\u00e3o sendo necess\u00e1rio enviar e receber o par\u00e2metro no evento <i>OnPreShow<\/i>.<\/p>\n<p>Script utilizado:<\/p>\n<\/div>\n<pre><span style=\"font-family: Courier New;\"><span style=\"color: #0000ff;\">Sub <\/span>Picture1_Click()<\/span>\r\n\r\nArg = XCMotor.Source.PathName\r\n<span style=\"color: #0000ff;\">Set<\/span> newScreen = Application.GetFrame(<span style=\"color: #ff0000;\">\"virtualFrame\"<\/span>)\r\nnewScreen.MoveFrame , , 250, 300\r\nnewScreen.SetFrameOptions XCMotor.Source.Name, 15+64+256+2048\r\n\r\n<span style=\"color: #0000ff;\">Set<\/span> screenObj = Application.GetScreen(<span style=\"color: #ff0000;\">\"CommandScreen\"<\/span>)\r\nscreenObj.Item(<span style=\"color: #ff0000;\">\"IndexedScreen1\"<\/span>).Source = Arg\r\nnewScreen.ShowScreen screenObj, 100, 0\r\n\r\n<span style=\"color: #0000ff;\">End Sub<\/span><\/pre>\n<p style=\"text-align: justify;\">Importante salientar que o m\u00e9todo <em><strong>GetScreen<\/strong> <\/em>baixa do servidor (e carrega em mem\u00f3ria) ou pega do cache em mem\u00f3ria do Viewer uma tela <strong>inativa (fechada)<\/strong>. Essa tela posteriormente pode ser utilizada pelo m\u00e9todo <strong><em>ShowScreen<\/em> <\/strong>para ser aberta realmente.<br \/>\nPortanto, fora deste cen\u00e1rio, basicamente a sua utiliza\u00e7\u00e3o ir\u00e1 depender se a tela utilizada\/carregada estiver aberta ou n\u00e3o.<\/p>\n<div align=\"justify\"><b>NOTA<\/b>: A aplica\u00e7\u00e3o em anexo foi desenvolvida com a vers\u00e3o 4.8 build 239 do Elipse E3.<\/div>\n<div align=\"justify\"><\/div>\n<h3 align=\"justify\">Anexos:<\/h3>\n<p><a href=\"http:\/\/kb.elipse.com.br\/wp-content\/uploads\/2019\/03\/3747\/Sample.zip\">Sample.zip<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Descri\u00e7\u00e3o: Como posso utilizar os m\u00e9todos GetScreen do Viewer e ShowScreen do Divisor? Para que eles servem? Solu\u00e7\u00e3o: O m\u00e9todo GetScreen(ScreenName) retorna um objeto Tela, cujo nome deve ser especificado&hellip;<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0},"categories":[594,614],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Utilizando os m\u00e9todos GetScreen e ShowScreen. - Elipse Knowledgebase<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/kb.elipse.com.br\/utilizando-os-metodos-getscreen-e-showscreen\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Utilizando os m\u00e9todos GetScreen e ShowScreen.\" \/>\n<meta property=\"og:description\" content=\"Descri\u00e7\u00e3o: Como posso utilizar os m\u00e9todos GetScreen do Viewer e ShowScreen do Divisor? 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