Qgis custom coordinate system and qgis.db problem

Compile the compiled Qgis library, mask get delete the path in the environment variable, test the Qgis.exe program function

If prompted as above:

Cause: The qgis.db file was not found and cannot be copied to the. Qgis2 folder in the system's default c:/users/administrator/.qgis2//gdal_pam;

Resolution: Locate the Resource folder in the source code and copy it to the Qgis.exe sibling directory.

This problem will cause a series of functions related to the Sqlite3.dll database, such as: the Custom coordinate system setting is invalid, the map with coordinate system has no effect, etc., can be solved by the above method!

Qgis custom coordinate system and qgis.db problem