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Function USBMTPSetFileProperty

USBMTPSetFileProperty sets a Property of a file or directory on an MTP device:

int USBMTPSetFileProperty(int          Dev, 
                          USBMTPHandle Handle, 
                          WORD         PropertyCode, 
                          void       * Property, 
                          UINT         Len);

Parameters

Dev

Index of the MTP device. This value should be in range 0 .. RTUSBMTPConfig.MaxDevices - 1.

Handle

Handle of the file or directory to set. This handle could have been retrieved through functions USBMTPFindFirstFile/USBMTPFindNextFile.

PropertyCode

The code value of the property to be set.

Property

Pointer to a buffer containing the property.

Len

Number of bytes in the buffer pointed to by parameter Property.

return value

If successful, a value >= RTU_SUCCESS is returned, otherwise, a negative error code.

Details about all available MTP file object properties are listed in Appendix B of the USB Media Transfer Protocol Specification, Revision 1.1. For each property, the PropertyCode and data type is listed. Please note that the file property passed to this function must be in little endian format.

Function Ren of demo program MTPDemo shows how this function is used.

Function USBMTPGetFileProperty

Function USBMTPGetFile