#Xojo examples manual
at that moment all fields are fetched except // those that set for manual retrieving // read them (fblob in our example) now if not cmd.Field( "fblob").isNull thenĬmd.Field( "fblob").
#Xojo examples update
He then used Shine to add a light source, light rays, a lens flare and tint the photo. The Ohanaware App Kit 2021 Release 3 is an incredibly exciting update to our Xojo Add-on that helps hundreds of developers to create compelling and modern Mac User Interfaces with the Xojo development environment. fetch results row by row and print results dim Filename as string dim i as integer= 0 while cmd.FetchNextįilename= "fblob"+str(i)+ ".bin" dim f as FolderItem=(Filename) For example, one morning the developer, Sam, took a photo of a sunflower with the sun behind him. do not automatically read this field into internal buffer (into corresponding SAField object) // we will provide a consumer for BLob fetching after FetchNextĬmd.Field( "fblob").LongOrLobReaderMode=SQLValueReadMBS.kLongOrLobReaderModeManual Read BLob in pieces providing user callback for BLob data processing // Select blob from our test table MsgBox "Size of BLob is "+str(s.GetLength)+ " bytes" wend // Usage 2. after fetching a row all Long/Lob fields are automatically read into internal buffers // just like other data types dim s as SQLStringMBS = cmd.Field( "fblob").asBLob Xojo is a cross-platform development tool and object-oriented programming language for creating powerful, native applications for macOS, Windows, Linux, the web, iOS, and Raspberry Pi. fetch results row by row and print results while cmd.FetchNext
Use the example code as-is then modify the code to adapt it to your particular needs or simply to learn a particular technique.
#Xojo examples how to
If you are looking for an example about how to do something specific, these are a great starting point. Read whole BLob(s) into internal buffers // Select BLob from our test table There are 400 project examples included with Xojo. associate a command with connection // connection can also be specified in SACommand constructor // Usage 1. end ifĬon.Connect(path, "", "",SQLConnectionMBS.kSQLiteClient)
Path = "test.db" // for Windows and Linux in the current folder the application is inside. Path = "/tmp/test.db" // put the database in the temporary folder else now add that file to database dim con as SQLConnectionMBSĬon = new SQLConnectionMBS // connection objectĬmd = new SQLCommandMBS(con, "Select fblob from test_tbl") // create command object // where is the library? 'con.Option(con.kOptionLibrarySQLite) = "/usr/lib/libsqlite3.0.dylib" // connect to database dim path as string if TargetMacOS then use internal sqlite library call InternalSQLiteLibraryMBS.Use
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