Pictures in EXE dialog

[Time_Runner]

One question. About this (SetWindowTheme id(5 hDlg) L"" L"") Should I use it here? I can see no difference if I use it or do not use it.

Code:

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,;SetWindowTheme id(5 hDlg) L"" L""
,SendMessage(id(5 hDlg) BM_SETIMAGE IMAGE_BITMAP LoadPictureFile(":200 $my qm$\1-1.bmp" 0)) ;;can be bmp, gif of jpg