1<?xml version="1.0" encoding="UTF-8"?> 2 3<!--*********************************************************** 4 * 5 * Licensed to the Apache Software Foundation (ASF) under one 6 * or more contributor license agreements. See the NOTICE file 7 * distributed with this work for additional information 8 * regarding copyright ownership. The ASF licenses this file 9 * to you under the Apache License, Version 2.0 (the 10 * "License"); you may not use this file except in compliance 11 * with the License. You may obtain a copy of the License at 12 * 13 * http://www.apache.org/licenses/LICENSE-2.0 14 * 15 * Unless required by applicable law or agreed to in writing, 16 * software distributed under the License is distributed on an 17 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 18 * KIND, either express or implied. See the License for the 19 * specific language governing permissions and limitations 20 * under the License. 21 * 22 ***********************************************************--> 23 24<helpdocument version="1.0"> 25<meta> 26<topic id="textsbasicshared03090403xml" indexer="include" status="PUBLISH"> 27<title id="tit" xml-lang="en-US">Declare Statement [Runtime]</title> 28<filename>/text/sbasic/shared/03090403.xhp</filename> 29</topic> 30</meta> 31<body> 32<section id="declare"> 33<bookmark xml-lang="en-US" branch="index" id="bm_id3148473"> 34<bookmark_value>Declare statement</bookmark_value> 35</bookmark> 36<paragraph role="heading" id="hd_id3148473" xml-lang="en-US" level="1" l10n="U" oldref="1"><link href="text/sbasic/shared/03090403.xhp" name="Declare Statement [Runtime]">Declare Statement [Runtime]</link></paragraph> 37<bookmark xml-lang="en-US" branch="index" id="bm_id3145316"> 38<bookmark_value>DLL (Dynamic Link Library)</bookmark_value> 39</bookmark> 40<paragraph role="paragraph" id="par_id3145316" xml-lang="en-US" l10n="CHG" oldref="2">Declares and defines a subroutine in a DLL file that you want to execute from $[officename] Basic.</paragraph> 41</section> 42<paragraph role="paragraph" id="par_id3146795" xml-lang="en-US" l10n="U" oldref="3">See also: <link href="text/sbasic/shared/03090405.xhp" name="FreeLibrary">FreeLibrary</link></paragraph> 43<paragraph role="heading" id="hd_id3156344" xml-lang="en-US" level="2" l10n="U" oldref="4">Syntax:</paragraph> 44<paragraph role="paragraph" id="par_id3148664" xml-lang="en-US" l10n="U" oldref="5">Declare {Sub | Function} Name Lib "Libname" [Alias "Aliasname"] [Parameter] [As Type]</paragraph> 45<paragraph role="heading" id="hd_id3153360" xml-lang="en-US" level="2" l10n="U" oldref="6">Parameters:</paragraph> 46<paragraph role="paragraph" id="par_id3154140" xml-lang="en-US" l10n="U" oldref="8"> 47<emph>Name:</emph> A different name than defined in the DLL, to call the subroutine from $[officename] Basic.</paragraph> 48<paragraph role="paragraph" id="par_id3150870" xml-lang="en-US" l10n="U" oldref="9"> 49<emph>Aliasname:</emph> Name of the subroutine as defined in the DLL.</paragraph> 50<paragraph role="paragraph" id="par_id3154684" xml-lang="en-US" l10n="U" oldref="10"> 51<emph>Libname:</emph> File or system name of the DLL. This library is automatically loaded the first time the function is used.</paragraph> 52<paragraph role="paragraph" id="par_id3148452" xml-lang="en-US" l10n="U" oldref="11"> 53<emph>Argumentlist:</emph> List of parameters representing arguments that are passed to the procedure when it is called. The type and number of parameters is dependent on the executed procedure.</paragraph> 54<paragraph role="paragraph" id="par_id3147289" xml-lang="en-US" l10n="U" oldref="12"> 55<emph>Type:</emph> Defines the data type of the value that is returned by a function procedure. You can exclude this parameter if a type-declaration character is entered after the name.</paragraph> 56<paragraph role="warning" id="par_id3146922" xml-lang="en-US" l10n="U" oldref="13">To pass a parameter to a subroutine as a value instead of as a reference, the parameter must be indicated by the keyword <emph>ByVal</emph>.</paragraph> 57<paragraph role="heading" id="hd_id3153951" xml-lang="en-US" level="2" l10n="U" oldref="14">Example:</paragraph> 58<paragraph role="paragraph" id="par_id3154320" xml-lang="en-US" l10n="U" oldref="15">Declare Sub MyMessageBeep Lib "user32.dll" Alias "MessageBeep" ( long )</paragraph> 59<paragraph role="paragraph" id="par_id3150417" xml-lang="en-US" l10n="U" oldref="17">Sub ExampleDeclare</paragraph> 60<paragraph role="paragraph" id="par_id3149959" xml-lang="en-US" l10n="U" oldref="18">Dim lValue As Long</paragraph> 61<paragraph role="paragraph" id="par_id3145647" xml-lang="en-US" l10n="U" oldref="19">lValue = 5000</paragraph> 62<paragraph role="paragraph" id="par_id3145801" xml-lang="en-US" l10n="U" oldref="20">MyMessageBeep( lValue )</paragraph> 63<paragraph role="paragraph" id="par_id3145253" xml-lang="en-US" l10n="U" oldref="21">FreeLibrary("user32.dll" )</paragraph> 64<paragraph role="paragraph" id="par_id3149402" xml-lang="en-US" l10n="U" oldref="22">End Sub</paragraph> 65</body> 66</helpdocument> 67