returns true if string starts with specified substring, case insensitive

Waits until all pending background tasks are executed.

Unbinds from the MarketBillingService. Call this when the application terminates to avoid leaking a ServiceConnection.

Unregisters a previously registered observer. @param observer the previously registered observer.

Fill book info fields using metadata from current book. @param info

Adds the given purchase information to the database and returns the total number of times that the given product has been purchased. @param orderId a

Updates the quantity of the given product to the given value. If the given value is zero, then the product is removed from the table. @param productId

save document formatting parameters after render

* vDestroyDiagram - remove a diagram by freeing the memory it uses */

* Create an end of a table */

* vEpilogue - clean up after everything is done */

* vPrologue1 - get options and call a specific initialization */

Verifies that the signature from the server matches the computed signature on the data. Returns true if the data is correctly signed. @param publicK

Verifies that the data was signed with the given signature, and returns the list of verified purchases. The data is in JSON format and contains a nonc

Mesage handler for about box.

m_buf_pos points to first byte of char

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