https://community.graphisoft.com/t5/Archicad-C-API/What-is-the-modification-time-value/m-p/191821#M8357 I have tested this, and as far as I know the modiStamp value changes even when you are zooming in/out, moving the camera, changing the view too. <BR /> But modiStamp won't change if you won't touch the project. Tue, 11 Sep 2012 07:09:17 GMT Tibor Lorantfy 2012-09-11T07:09:17Z https://community.graphisoft.com/t5/Archicad-C-API/What-is-the-modification-time-value/m-p/191820#M8356 <DIV class="actalk-migrated-content">projectInfo has a modiStamp field which is UInt64.<BR />How is that value interpreted please?<BR /><BR />If I open a new project and get the projectInfo, the modiStamp field has a value, which changes with every successive call to get the projectInfo even when nothing else is done to the file.</DIV> Tue, 24 Sep 2024 07:55:52 GMT https://community.graphisoft.com/t5/Archicad-C-API/What-is-the-modification-time-value/m-p/191820#M8356 Anonymous 2024-09-24T07:55:52Z https://community.graphisoft.com/t5/Archicad-C-API/What-is-the-modification-time-value/m-p/191821#M8357 I have tested this, and as far as I know the modiStamp value changes even when you are zooming in/out, moving the camera, changing the view too. <BR /> But modiStamp won't change if you won't touch the project. Tue, 11 Sep 2012 07:09:17 GMT https://community.graphisoft.com/t5/Archicad-C-API/What-is-the-modification-time-value/m-p/191821#M8357 Tibor Lorantfy 2012-09-11T07:09:17Z https://community.graphisoft.com/t5/Archicad-C-API/What-is-the-modification-time-value/m-p/191822#M8358 If you close the file without saving and re-open it, the modiStamp seems to revert to its original value and then start incrementing again.<BR /> <BR /> I'm looking for a way to tell if the file has been changed since the last save. Any suggestions? Tue, 11 Sep 2012 07:18:03 GMT https://community.graphisoft.com/t5/Archicad-C-API/What-is-the-modification-time-value/m-p/191822#M8358 Anonymous 2012-09-11T07:18:03Z