SystemParametersInfo(SPI_GETNONCLIENTMETRICS, ...) problem

T

Trips

Well-known member
Joined
Aug 7, 2010
Messages
2,788
Hi,
Ive recently ported project from VS 6.0 to VS 2008. For now on, it  seems that everything is working fine, except obtaining of non-client metrics. The following code compiles, but during program execution SystemParemetersInfo code is failing:
-------------------
<font size=2>
</font><font color="#010001" size=2>NONCLIENTMETRICS</font> <font color="#010001" size=2>ncm</font><font size=2>;
</font><font color="#010001" size=2>ncm</font><font size=2>.</font><font color="#010001" size=2>cbSize</font><font size=2> = </font><font color="#0000ff" size=2>sizeof</font><font size=2>(</font><font color="#010001" size=2>NONCLIENTMETRICS</font><font size=2>);
</font><font color="#0000ff" size=2>if</font><font size=2> (</font><font color="#010001" size=2>SystemParametersInfo</font><font size=2>(</font><font color="#010001" size=2>SPI_GETNONCLIENTMETRICS</font><font size=2>, </font><font color="#0000ff" size=2>sizeof</font><font size=2>(</font><font color="#010001" size=2>NONCLIENTMETRICS</font><font size=2>), &</font><font color="#010001" size=2>ncm</font><font size=2>, 0))
{
</font><font color="#010001" size=2>    // Im removing this piece of code since app doesnt enter this execution path...</font> <font size=2>
}
</font><font color="#0000ff" size=2>else </font><font size=2>
{
<blockquote dir=ltr style="margin-right:0px
</font><font color="#010001" size=2>LPVOID</font> <font color="#010001" size=2>lpMsgBuf</font><font size=2>;
</font><font color="#010001" size=2>DWORD</font> <font color="#010001" size=2>dw</font><font size=2> = </font><font color="#010001" size=2>GetLastError</font><font size=2>();
</font><font color="#010001" size=2>FormatMessage</font><font size=2>(
</font><font color="#010001" size=2>FORMAT_MESSAGE_ALLOCATE_BUFFER</font><font size=2> |
</font><font color="#010001" size=2>FORMAT_MESSAGE_FROM_SYSTEM</font><font size=2> |
</font><font color="#010001" size=2>FORMAT_MESSAGE_IGNORE_INSERTS</font><font size=2>,
</font><font color="#010001" size=2>NULL</font><font size=2>,
</font><font color="#010001" size=2>dw</font><font size=2>,
</font><font color="#010001" size=2>MAKELANGID</font><font size=2>(</font><font color="#010001" size=2>LANG_NEUTRAL</font><font size=2>, </font><font color="#010001" size=2>SUBLANG_DEFAULT</font><font size=2>),
(</font><font color="#010001" size=2>LPTSTR</font><font size=2>) &</font><font color="#010001" size=2>lpMsgBuf</font><font size=2>,
0, </font><font color="#010001" size=2>NULL</font><font size=2> );
</font><font color="#008000" size=2>// Display the error message and exit the process </font><font size=2>
</font><font color="#010001" size=2>LocalFree</font><font size=2>(</font><font color="#010001" size=2>lpMsgBuf</font><font size=2>); </blockquote>
}

-------------------

As you can see, Ive placed <font color="#010001" size=2>GetLastError() call to see whats going wrong, but lpMsgBuf returns The operation completed sucessfully.
Whats wrong here?
(please note that version with <font size=2><font color="#0000ff sizeof</font>(ncm) call gives the same results</font>)</font> </font>

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