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It affects all TButtonControl descendants of which TCheckBox is just one. The easiest way to avoid that is to use actions. Another way would be to make use of the (protected) ClicksDisabled property, which skips the call to the event handler. That is basically the same as what the actions do.

Here's a basic demo using TPath and TSelectionPoint (Tested for Windows 32-bit). Click and drag to draw the line. Then you can drag the control points to create a curve. Of course you can then add the path to a list of paths if you want to keep multiple drawn paths. PathDemo.zip

That's actually how I worked around the native TabControl since I was using only the tabs, not the panels as I use frames instead. I switched to 4 buttons in a horizontal grid layer at the bottom of the other layer containing a listbox. Was just curious if the font problem would be solved. I'll try it on a test blank app.

Hi, I confirm that both CTRL+F and CTRL+C do not work under Delphi Alexandria + Win11 64b. Not working is: HtmlHelp(0, Application.HelpFile, HH_DISPLAY_TOC, 0); HtmlHelp(0, Application.HelpFile, HH_DISPLAY_INDEX, DWORD(PWideChar(''))); HtmlHelp(0, Application.HelpFile, HH_DISPLAY_SEARCH, DWORD(@Query)); Application.HelpContext() Calling HtmlHelpW instead of HtmlHelp works. A broken Application.HelpContext solved them like this: function TFormMain.ApplicationEvents1Help(Command: Word; Data: NativeInt; var CallHelp: Boolean): Boolean; begin HtmlHelpW(0, PWideChar(Application.HelpFile), HH_HELP_CONTEXT, Data); CallHelp := False; end; I used HH_HELP_CONTEXT because even when calling the Application.HelpContext the Command parameter contained 1 instead of 15. Of course, this solution does not work if HelpKeyword is used for components. A universal solution could be made by possibly recoding these constants. const { Commands to pass to WinHelp() } {$EXTERNALSYM HELP_CONTEXT} HELP_CONTEXT = 1; { Display topic in ulTopic } {$EXTERNALSYM HELP_QUIT} HELP_QUIT = 2; { Terminate help } {$EXTERNALSYM HELP_INDEX} HELP_INDEX = 3; { Display index } {$EXTERNALSYM HELP_CONTENTS} HELP_CONTENTS = 3; {$EXTERNALSYM HELP_HELPONHELP} HELP_HELPONHELP = 4; { Display help on using help } {$EXTERNALSYM HELP_SETINDEX} HELP_SETINDEX = 5; { Set current Index for multi index help } {$EXTERNALSYM HELP_SETCONTENTS} HELP_SETCONTENTS = 5; {$EXTERNALSYM HELP_CONTEXTPOPUP} HELP_CONTEXTPOPUP = 8; {$EXTERNALSYM HELP_FORCEFILE} HELP_FORCEFILE = 9; {$EXTERNALSYM HELP_KEY} HELP_KEY = 257; { Display topic for keyword in offabData } {$EXTERNALSYM HELP_COMMAND} HELP_COMMAND = 258; {$EXTERNALSYM HELP_PARTIALKEY} HELP_PARTIALKEY = 261; {$EXTERNALSYM HELP_MULTIKEY} HELP_MULTIKEY = 513; {$EXTERNALSYM HELP_SETWINPOS} HELP_SETWINPOS = 515; {$EXTERNALSYM HELP_CONTEXTMENU} HELP_CONTEXTMENU = 10; {$EXTERNALSYM HELP_FINDER} HELP_FINDER = 11; {$EXTERNALSYM HELP_WM_HELP} HELP_WM_HELP = 12; {$EXTERNALSYM HELP_SETPOPUP_POS} HELP_SETPOPUP_POS = 13; const {$EXTERNALSYM HH_DISPLAY_TOPIC } HH_DISPLAY_TOPIC = 0; {$EXTERNALSYM HH_HELP_FINDER } HH_HELP_FINDER = 0; {$EXTERNALSYM HH_DISPLAY_TOC } HH_DISPLAY_TOC = 1; {$EXTERNALSYM HH_DISPLAY_INDEX } HH_DISPLAY_INDEX = 2; {$EXTERNALSYM HH_DISPLAY_SEARCH } HH_DISPLAY_SEARCH = 3; {$EXTERNALSYM HH_SET_WIN_TYPE } HH_SET_WIN_TYPE = 4; {$EXTERNALSYM HH_GET_WIN_TYPE } HH_GET_WIN_TYPE = 5; {$EXTERNALSYM HH_GET_WIN_HANDLE } HH_GET_WIN_HANDLE = 6; {$EXTERNALSYM HH_ENUM_INFO_TYPE } HH_ENUM_INFO_TYPE = 7; {$EXTERNALSYM HH_SET_INFO_TYPE } HH_SET_INFO_TYPE = 8; {$EXTERNALSYM HH_SYNC } HH_SYNC = 9; {$EXTERNALSYM HH_KEYWORD_LOOKUP } HH_KEYWORD_LOOKUP = $d; {$EXTERNALSYM HH_DISPLAY_TEXT_POPUP } HH_DISPLAY_TEXT_POPUP = $e; {$EXTERNALSYM HH_HELP_CONTEXT } HH_HELP_CONTEXT = $f; {$EXTERNALSYM HH_TP_HELP_CONTEXTMENU } HH_TP_HELP_CONTEXTMENU = $10; {$EXTERNALSYM HH_TP_HELP_WM_HELP } HH_TP_HELP_WM_HELP = $11; {$EXTERNALSYM HH_CLOSE_ALL } HH_CLOSE_ALL = $12; {$EXTERNALSYM HH_ALINK_LOOKUP } HH_ALINK_LOOKUP = $13; {$EXTERNALSYM HH_GET_LAST_ERROR } HH_GET_LAST_ERROR = $14; {$EXTERNALSYM HH_ENUM_CATEGORY } HH_ENUM_CATEGORY = $15; {$EXTERNALSYM HH_ENUM_CATEGORY_IT } HH_ENUM_CATEGORY_IT = $16; {$EXTERNALSYM HH_RESET_IT_FILTER } HH_RESET_IT_FILTER = $17; {$EXTERNALSYM HH_SET_INCLUSIVE_FILTER } HH_SET_INCLUSIVE_FILTER = $18; {$EXTERNALSYM HH_SET_EXCLUSIVE_FILTER } HH_SET_EXCLUSIVE_FILTER = $19; {$EXTERNALSYM HH_INITIALIZE } HH_INITIALIZE = $1c; {$EXTERNALSYM HH_UNINITIALIZE } HH_UNINITIALIZE = $1d; {$EXTERNALSYM HH_SET_QUERYSERVICE } HH_SET_QUERYSERVICE = $1e; {$EXTERNALSYM HH_PRETRANSLATEMESSAGE } HH_PRETRANSLATEMESSAGE = $fd; {$EXTERNALSYM HH_GLOBALPROPERTY } HH_GLOBALPROPERTY = $fc;

Unfortunately, changing any version information values at least once will break inheritance and the values in that build configuration have their own life. There is no built-in way to establish inheritance - unless the entries are removed from the dproj with some exterenal tool. That is the reason why Project Magician has this option

I have attached the FMX.InAppPurchase.Mac.pas that we use so it is easy to use for others. All you need is to add it to your project and also add a modified version of FMX.InAppPurchase.pas where you include the file (just search for FMX.InAppPurchase.IOS, and see how that file is added, and do the same with the FMX edition) FMX.InAppPurchase.zip