pcsoft.us.windevCopyright 2026, PC SOFT14 Oct 2015 08:12:00 Z14 Oct 2015 06:16:00 ZI have several questions about data type. 1. Does windev have similar function to Sizeof() ? 2. For unsigned long in C, what is the corresponding type? System int? How about this unsigned long (4 byte) is in a struct? Assuming we convert struct to structure. Will it affect other variable in the structure? 3. typedef struct FTRPACK { Unsigned long dwSize; // Length of data in bytes. void *pData; // Data pointer. Most likely, it will be a byte array which length is 2001. } FTR_DATA, *FTR_DATA_PTR; int myContext; int FTR_PURPOSE_ENROLL; FTR_DATA Template; Now I want to use API() function to call the following function (in a dll file). FTREnroll(myContext, FTR_PURPOSE_ENROLL, &Template); How do I define the Template variable? I tried to make *pData as a fixed byte array. But it is telling me invalid argument. Any suggestion?30WEBDEVen_UShttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/54470-how-convert-type-struct-windev-structure/read.awpmoderateur@pcsoft.fr (El moderador)webmaster@pcsoft.fr (El webmaster)guestpcsoft.us.windevhttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/54470-how-convert-type-struct-windev-structure-54476/read.awp14 Oct 2015 08:12:00 ZHi Bruce, Look at tools, WDTool WDAPI, it has a section to convert C to WL. Regards, Piethttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/54470-how-convert-type-struct-windev-structure-54476/read.awphttps://forum.pcsoft.fr/es-ES/pcsoft.us.windev/54470-how-convert-type-struct-windev-structure-54476/read.awpHow to convert C type struct to Windev structure