C# Signature:

[DllImport("kernel32.dll")]
static extern bool QueryPerformanceCounter(out long lpPerformanceCount);

User-Defined Types:

None.

Notes:

None.

Tips & Tricks:

For this particular method, execution time is often critical. Security can be traded for additional speed by applying the SuppressUnmanagedCodeSecurity attribute to the method declaration. This will prevent the runtime from doing a security stack walk at runtime.

[DllImport("kernel32.dll"),SuppressUnmanagedCodeSecurity]
static extern bool QueryPerformanceCounter(out long lpPerformanceCount);

Sample Code:

Please add some!

Alternative Managed API:

Do you know one? Please contribute it!

Please edit this page!

Do you have...

• helpful tips or sample code to share for using this API in managed code?
• corrections to the existing content?
• variations of the signature you want to share?
• additional languages you want to include?

Select "Edit This Page" on the right hand toolbar and edit it! Or add new pages containing supporting types needed for this API (structures, delegates, and more).