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<h2>
<a name="1206842"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">5.9 Changing the debugger context</font>
</h2><hr>
<p>
<a name="1210081"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">The debugger context is divided into the following categories: Program, Task, Frame and Location. The current debugger context is indicated in ST Visual Develop by the context indicator (a green triangle, <img src="images/debug17.gif" height="13" width="11">
). The context indicator is displayed in the <strong>Editor</strong>, <strong>Callstack</strong>, <strong>Tasks</strong> and <strong>Symbols</strong> windows. The current program and task context are also shown in the status bar of the main ST Visual Develop window.</font>
</p>
<h3>
<a name="1210158"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">5.9.1 Changing the program context</font>
</h3>
<p>
<a name="1210159"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">The program context is changed in the <strong>Symbols</strong> window (see <a href="guia45.htm#1146143"><font color="#0000ff" face="Verdana, Arial, Helvetica, sans-serif"><i>Section燗.6.18: Symbols window</i></font></a>). </font>
</p>
<ol type="1">
<p> <font size=2 face="Verdana, Arial, Helvetica, sans-serif"><li value="1"><a name="1210224"> </a>Open the <strong>Symbols</strong> window, by doing one of the following:</font></p>
<ul>
<p> <font size=2 face="Verdana, Arial, Helvetica, sans-serif"><li ><a name="1210190"> </a>click on <img src="images/debug18.gif" height="25" width="26">
in the <strong>Debug Windows</strong> menu, </font></p>
<p> <font size=2 face="Verdana, Arial, Helvetica, sans-serif"><li ><a name="1210191"> </a>select <strong>Symbols</strong> from the <strong>View</strong> menu,</font></p>
<p> <font size=2 face="Verdana, Arial, Helvetica, sans-serif"><li ><a name="1210192"> </a>press <strong>Alt+9</strong> on the keyboard.</font></p>
</ul>
<dl>
<dt> <a name="1210248"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">The top left area of the <strong>Symbols</strong> window lists all of the programs in the application. There is one program for every <font size=2 face=Courier><strong>.lku</strong></font> and <font size=2 face=Courier><strong>.dbg</strong></font> file.</font>
</dl>
<p> <font size=2 face="Verdana, Arial, Helvetica, sans-serif"><li value="2"><a name="1210220"> </a>If the program you require is not currently loaded, right click on the <strong>Symbols</strong> window and select <strong>Load Program</strong> from the <strong>Symbols</strong> context menu. </font></p>
<dl>
<dt> <a name="1210302"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Use the <strong>Open</strong> dialog displayed to open the required program.</font>
</dl>
<p> <font size=2 face="Verdana, Arial, Helvetica, sans-serif"><li value="3"><a name="1210290"> </a>Either:</font></p>
<ul>
<p> <font size=2 face="Verdana, Arial, Helvetica, sans-serif"><li ><a name="1210727"> </a>right click on the program to which you want to change the context and select <strong>Change to Program</strong> from the <strong>Symbols</strong> context menu, or</font></p>
<p> <font size=2 face="Verdana, Arial, Helvetica, sans-serif"><li ><a name="1210735"> </a>double click on the program to which you want to change the context.</font></p>
</ul>
<dl>
<dt> <a name="1210311"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">The debugger context is changed and the context indicator is moved to the selected program.</font>
</dl>
</ol>
<h3>
<a name="1210144"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">5.9.2 Changing the task context</font>
</h3>
<p>
<a name="1210325"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">The task context is changed in the <strong>Tasks</strong> window (see <a href="guia40.htm#1155224"><font color="#0000ff" face="Verdana, Arial, Helvetica, sans-serif"><i>Section燗.6.13: Tasks window</i></font></a>). </font>
</p>
<ol type="1">
<p> <font size=2 face="Verdana, Arial, Helvetica, sans-serif"><li value="1"><a name="1210326"> </a>Open the <strong>Tasks</strong> window, by doing one of the following:</font></p>
<ul>
<p> <font size=2 face="Verdana, Arial, Helvetica, sans-serif"><li ><a name="1210357"> </a>click on <img src="images/debug19.gif" height="25" width="26">
in the <strong>Debug Windows</strong> menu, </font></p>
<p> <font size=2 face="Verdana, Arial, Helvetica, sans-serif"><li ><a name="1210358"> </a>select <strong>Tasks</strong> from the <strong>View</strong> menu,</font></p>
<p> <font size=2 face="Verdana, Arial, Helvetica, sans-serif"><li ><a name="1210359"> </a>press <strong>Alt+4</strong> on the keyboard.</font></p>
</ul>
<dl>
<dt> <a name="1210370"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">The <strong>Tasks</strong> window displays all of the tasks currently active in the application.</font>
</dl>
<p> <font size=2 face="Verdana, Arial, Helvetica, sans-serif"><li value="2"><a name="1210382"> </a>Either:</font></p>
<ul>
<p> <font size=2 face="Verdana, Arial, Helvetica, sans-serif"><li ><a name="1210742"> </a>right click on the task to which you want to change the context and select <strong>Change to Task</strong> from the <strong>Tasks</strong> context menu, or</font></p>
<p> <font size=2 face="Verdana, Arial, Helvetica, sans-serif"><li ><a name="1210748"> </a>double click on the task to which you want to change the context.</font></p>
</ul>
<dl>
<dt> <a name="1210383"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">The debugger context is changed and the context indicator is moved to the selected task.</font>
</dl>
</ol>
<h3>
<a name="1210105"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">5.9.3 Changing the frame context</font>
</h3>
<p>
<a name="1210400"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">The frame context is changed in the <strong>Callstack</strong> window (see <a href="guia43.htm#1145749"><font color="#0000ff" face="Verdana, Arial, Helvetica, sans-serif"><i>Section燗.6.16: Callstack window</i></font></a>). </font>
</p>
<ol type="1">
<p> <font size=2 face="Verdana, Arial, Helvetica, sans-serif"><li value="1"><a name="1210401"> </a>Open the <strong>Callstack</strong> window, by doing one of the following:</font></p>
<ul>
<p> <font size=2 face="Verdana, Arial, Helvetica, sans-serif"><li ><a name="1210405"> </a>click on <img src="images/debug20.gif" height="25" width="26">
in the <strong>Debug Windows</strong> menu, </font></p>
<p> <font size=2 face="Verdana, Arial, Helvetica, sans-serif"><li ><a name="1210406"> </a>select <strong>CallStack</strong> from the <strong>View</strong> menu,</font></p>
<p> <font size=2 face="Verdana, Arial, Helvetica, sans-serif"><li ><a name="1210407"> </a>press <strong>Alt+7</strong> on the keyboard.</font></p>
</ul>
<dl>
<dt> <a name="1210438"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">The <strong>Callstack</strong> window displays the callstack of the current task.</font>
</dl>
<p> <font size=2 face="Verdana, Arial, Helvetica, sans-serif"><li value="2"><a name="1210409"> </a>Double click on the frame to which you want to change the context.</font></p>
<dl>
<dt> <a name="1210410"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">The debugger context is changed and the context indicator is displayed next to the selected frame.</font>
</dl>
</ol>
<h3>
<a name="1210168"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">5.9.4 Changing context of a watchpoint</font>
</h3>
<p>
<a name="1210475"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">When a watchpoint is set (see <a href="debug9.htm#1209877"><font color="#0000ff" face="Verdana, Arial, Helvetica, sans-serif"><i>Section⌨️ 快捷键说明
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