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Extensible Markup Language  |  2003-08-01  |  5.7 KB  |  51 lines
  1. <?xml version="1.0" encoding="utf-8"?>
  2. <html><head><title>Declare Statement [Runtime]</title><meta name="filename" content="text/sbasic/common/03090403"/><help:css-file-link xmlns:help="http://openoffice.org/2000/help"/><!--The CSS style header method for setting styles--><style type="text/css">
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  4.         table.Tabelle1{
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  6.         span.Tabelle1A{
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  8.         span.Tabelle1B{
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  10.         tr.Tabelle11{
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  12.         td.Tabelle1A1{
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  14.         p.P1{
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  16.         span.T1{
  17.                 font-weight:bold;}
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  20.         </style></head><body>
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  23.   <help:paragraphinfo state="E" xmlns:help="http://openoffice.org/2000/help"/><help:to-be-embedded Eid="declare" xmlns:help="http://openoffice.org/2000/help"><a name="declare"/>
  24.   <p class="Head1"><help:paragraphinfo state="U" number="1"/><help:key-word value="Declare; statement" tag="kw66561_1"/><help:link Id="66561">Declare Statement [Runtime]</help:link></p>
  25.   <p class="Paragraph"><help:paragraphinfo state="U" number="2"/>Declares and defines a subroutine in a <help:key-word value="DLL (Dynamic Link Library)" tag="kw66561_2"/>DLL (Dynamic Link Library) that you want to <text:s text:c="" xmlns:text="http://openoffice.org/2000/text"/>execute from <help:productname>%PRODUCTNAME</help:productname> Basic.</p>
  26.   <help:paragraphinfo state="E"/></help:to-be-embedded>
  27.   <p class="Paragraph"><help:paragraphinfo state="U" number="3" xmlns:help="http://openoffice.org/2000/help"/>See also: <help:link Id="66404" Eid="freelibrary" xmlns:help="http://openoffice.org/2000/help">FreeLibrary</help:link></p>
  28.   <p class="Head2"><help:paragraphinfo state="U" number="4" xmlns:help="http://openoffice.org/2000/help"/>Syntax:</p>
  29.   <p class="Paragraph"><help:paragraphinfo state="U" number="5" xmlns:help="http://openoffice.org/2000/help"/>Declare {Sub | Function} Name Lib "Libname" [Alias "Aliasname"] [Parameter] [As Type]</p>
  30.   <p class="Head2"><help:paragraphinfo state="U" number="6" xmlns:help="http://openoffice.org/2000/help"/>Parameters:</p>
  31.   <p class="Paragraph"><help:paragraphinfo state="U" number="8" xmlns:help="http://openoffice.org/2000/help"/><span class="T1">Name:</span> A different name than defined in the DLL, to call the subroutine from <help:productname xmlns:help="http://openoffice.org/2000/help">%PRODUCTNAME</help:productname> Basic.</p>
  32.   <p class="Paragraph"><help:paragraphinfo state="U" number="9" xmlns:help="http://openoffice.org/2000/help"/><span class="T1">Aliasname</span>: Name of the subroutine as defined in the DLL.</p>
  33.   <p class="Paragraph"><help:paragraphinfo state="U" number="10" xmlns:help="http://openoffice.org/2000/help"/><span class="T1">Libname:</span> File or system name of the DLL. This library is automatically loaded the first time the function is used.</p>
  34.   <p class="Paragraph"><help:paragraphinfo state="U" number="11" xmlns:help="http://openoffice.org/2000/help"/><span class="T1">Argumentlist:</span> 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.</p>
  35.   <p class="Paragraph"><help:paragraphinfo state="U" number="12" xmlns:help="http://openoffice.org/2000/help"/><span class="T1">Type:</span> 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.</p>
  36.   <table><tr class="Tabelle11"><th class="Tabelle1A1" style="text-align:left;"><span class="Tabelle1A">
  37.       <p class="TextInTable"><draw:image draw:name="Icon0" svg:desc="This icon marks text containing important information on data and system security." svg:pixelx="32" svg:pixely="32" svg:width="0.847cm" svg:height="0.847cm" xlink:href="65640" draw:filter-name="" xmlns:draw="http://openoffice.org/2000/drawing" xmlns:svg="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"/></p>
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  39.      </span></th><th class="Tabelle1A1" style="text-align:left;"><span class="Tabelle1B">
  40.       <p class="TextInTable"><help:paragraphinfo state="U" number="13" xmlns:help="http://openoffice.org/2000/help"/>To pass a parameter to a subroutine as a value instead of as a reference, the parameter must be indicated by the keyword <span class="T1">ByVal</span>.</p>
  41.      </span></th></tr></table>
  42.   <p class="Head2"><help:paragraphinfo state="U" number="14" xmlns:help="http://openoffice.org/2000/help"/>Example:</p>
  43.   <p class="PropText"><help:paragraphinfo state="U" number="15" xmlns:help="http://openoffice.org/2000/help"/>Declare Sub MyMessageBeep Lib "user32.dll" Alias "MessageBeep" ( long )</p>
  44.   <p class="PropText"><help:paragraphinfo state="U" number="16" xmlns:help="http://openoffice.org/2000/help"/></p>
  45.   <p class="PropText"><help:paragraphinfo state="U" number="17" xmlns:help="http://openoffice.org/2000/help"/>Sub ExampleDeclare</p>
  46.   <p class="PropText"><help:paragraphinfo state="U" number="18" xmlns:help="http://openoffice.org/2000/help"/><text:tab-stop xmlns:text="http://openoffice.org/2000/text"/>Dim lValue As Long</p>
  47.   <p class="PropText"><help:paragraphinfo state="U" number="19" xmlns:help="http://openoffice.org/2000/help"/><text:tab-stop xmlns:text="http://openoffice.org/2000/text"/>lValue = 5000</p>
  48.   <p class="PropText"><help:paragraphinfo state="U" number="20" xmlns:help="http://openoffice.org/2000/help"/><text:tab-stop xmlns:text="http://openoffice.org/2000/text"/>MyMessageBeep( lValue )</p>
  49.   <p class="PropText"><help:paragraphinfo state="U" number="21" xmlns:help="http://openoffice.org/2000/help"/><text:tab-stop xmlns:text="http://openoffice.org/2000/text"/>FreeLibrary("user32.dll" )</p>
  50.   <p class="PropText"><help:paragraphinfo state="U" number="22" xmlns:help="http://openoffice.org/2000/help"/>End Sub</p>
  51.  </body></html>