Write Filters VIs

June 2014, 371942H-01

Owning Palette: Advanced File VIs and Functions

Requires: Application Builder or Professional System. This topic might not match its corresponding palette in LabVIEW depending on your operating system, licensed product(s), and target.

Use the Write Filters VIs to protect volumes from unwanted modifications. You can enable, disable, and configure write filters for touch panel devices.

Example

Write filters protect data by redirecting write operations to another location or overlay. Refer to the MSDN Web site at msdn.microsoft.com to learn more about write filters.

Note

You must install the same version of the LabVIEW Run-Time Engine on the development computer and the touch panel device to use the Write Filters VIs.
National Instruments recommends that you update the operating system before you enable write filters. Otherwise, the Windows Update service may interfere when you restart the computer for write filter changes to take effect.

Subpalette	Description
Enhanced Write Filter VIs	Use the Enhanced Write Filter (EWF) VIs to protect a volume from modifications.
File-Based Write Filter VIs	Use the File-Based Write Filter (FBWF) VIs to protect files and folders in a volume from modifications. You specify files and folders you do not want to protect by adding them to the FBWF protection exclusion list.

Example

Refer to the Windows Embedded Enabling Features.lvproj in the labview\examples\TouchPanel\Windows Embedded Enabling Features directory for an example of using the Write Filters VIs.

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