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Exemplo de editor de diagramas.

#include "protheus.ch"// Editor BPMuser function dgeditor()	local oWindow, oPanel, oMenubar, oEditor, oDocument, oBPMDoc, aDocs := {}	local nGapX := 0, oGapY := 0, nDoc := 1	local oButton0, oButton1, oButton2, oButton3, oButton4, oButton5, oButton6, oButton7, oButton8, oButton9	local cFileName := "          "	public cBuffer := ""		// Janela	oWindow := tWindow():New( 10, 10, 400, 400, "Editor de Diagramas",,,,,,,,CLR_BLACK,CLR_WHITE,,,,,,,.T. )	// oMenubar := tMenubar():New(oWindow) // tMenuBar - util para MDI	oPanel := tPanel():New(0, 0, "", oWindow,,,,CLR_BLACK ,CLR_WHITE, 20, 20)	oPanel:Align := 3	// Editor	oEditor := TDGEditor():New(oWindow)	oEditor:Align := 5 // ALLCLIENT	// Documento	oBPMDoc := TDGBpmDoc():New(oEditor)	nGapX := oBPMDoc:nHorizGap	nGapY := oBPMDoc:nVertGap	aAdd(aDocs, oBPMDoc)	// Barra de Ferramentas	@ 0, 20 SAY "File: "	@ 0, 22 GET cFileName PICTURE "XXXXXXXXXX"	@ 0, 30 SAY "Window:"	@ 0, 34 GET nDoc PICTURE "999"	oButton0 := tButton():New(0, 0,   "New", oPanel, {|| TDGBpmDoc():New(oEditor)}, 50, 10,,,,.T.)	oButton1 := tButton():New(0, 50,  "Save", oPanel, {|| oEditor:GetDoc(nDoc):save(@cBuffer), saveBPM(cFileName) }, 50, 10,,,,.T.)	oButton2 := tButton():New(0, 100, "Load", oPanel, {|| if(restoreBPM(cFileName), oEditor:loadDoc(@cBuffer), .f.)}, 50, 10,,,,.T.)	oButton3 := tButton():New(10, 0,   "ZoomIn", oPanel, {||oEditor:GetDoc(nDoc):ZoomIn()}, 50, 10,,,,.T.) 	oButton4 := tButton():New(10, 50,  "ZoomOut", oPanel, {||oEditor:GetDoc(nDoc):ZoomOut()}, 50, 10,,,,.T.) 	oButton5 := tButton():New(10, 100, "Line", oPanel, {||oEditor:GetDoc(nDoc):addConnector(0)}, 50, 10,,,,.T.) 	oButton6 := tButton():New(10, 150, "Poly", oPanel, {||oEditor:GetDoc(nDoc):addConnector(1)}, 50, 10,,,,.T.) 	oButton7 := tButton():New(10, 200, "Shapes", oPanel, {||showshapes(oEditor:GetDoc(nDoc):GetShapes())}, 50, 10,,,,.T.) 	oButton8 := tButton():New(10, 250, "Connectors", oPanel, {||showconns(oEditor:GetDoc(nDoc):GetConnectors())}, 50, 10,,,,.T.) 	oButton9 := tButton():New(10, 300, "Show", oPanel, {|| oEditor:GetDoc(nDoc):ShowBoxes()}, 50, 10,,,,.T.) 	// Janela	oWindow:Activate()return// Mostra shapes na consolefunction showshapes(aShapes)	local x, nSize := len(aShapes)	conout("Shapes")	for x := 1 to nSize		conout("Shape ["+str(x,2)+"]: "+aShapes[x]:cText)	nextreturn// Mostra conectores na consolefunction showconns(aConns)	local x, nSize := len(aConns)	conout("Conectors")	for x := 1 to nSize		conout("Conn ["+str(x,2)+"]: "+str(aConns[x]:nX))	nextreturn