ShellExecuteEx and Coinitialize in VCL thread

Question

Do I need to call Coinitialize in the main/VCL thread in Delphi before using ShellExecuteEx?

For a thread, yes but for the VCL thread ?

Answer 1

No need to call CoInitialize for Windows Forms Applications. This is done for you in the main thread. More specific TApplication.Create in Forms.Pas:

...
if not IsLibrary then
 FNeedToUninitialize := Succeeded(OleInitialize(nil));
...