Grepping FPC sources: TabCtrl_InsertItem should be in the Windows unit. Just like all other WinAPI functions.
ComCtrls unit is for components (Lazarus / Delphi ones), so it's not usable for you if you want to use direct WinAPI functions.
Grepping FPC sources: TabCtrl_InsertItem should be in the Windows unit. Just like all other WinAPI functions.
ComCtrls unit is for components (Lazarus / Delphi ones), so it's not usable for you if you want to use direct WinAPI functions.
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