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dzBdsLauncher tries to solve the problem of accidentally opening a Delphi project with the wrong Delphi version.
While .dproj files can be opened with newer versions of Delphi than the one that created them, it does not work the other way around. So if you open a Delphi 10 .dproj file with e.g. Delphi 2007, you will just get an error message. If you open a Delphi 2007 .dproj file with Delphi 10, it will automatically convert it to the new format used by that version and it will be unreadable by Delphi 2007.
The idea is to register dzBdsLauncher as the handler for .dpr, .dproj, .bdsproj, .dof and .groupproj files in Windows, so your chances of opening the right version of Delphi when double clicking on such a file will be much higher than normal.
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User Reviews
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What is it for? Just use the DPR file of the project Nothing elseReply from dzBdsLauncherEdited 2025-10-19
The tool automatically selects the right Delphi version to start the project with, where "right" means the version the project was created/last saved with. If you only have one Delphi version installed, you don't need this tool. If you have multiple versions, double clicking a .dpr file will always launch the latest version. If you are fine with that, you don't need this tool either.