GUI: Proof of concept with wx-c.dll

[v3cz0r]

Why using ASM? Declare it as a function pointer.. you can do

Code:

type myfuncptr as sub(byval as string, byval as string, byval as string)

    dim as myfuncptr f1, f2, f3, ...

    f1("a", "b", "c")

with 0.13 (and w/o the typedef w/ 0.12 and below), no temp strings needed or whatever.

[dumbledore]

i got an error trying that... something about no forward function pointers. :???:
fsw: to make it do that, catch the close event (wxEvent_EVT_CLOSE_WINDOW), and in the handler sub, if you don't want the window to close, do a wxEvent_Skip of the event. :wink:

[dumbledore]

er, here's the exact error (and code)

Code:

dim shared FunctionPtr as function ptr

Code:

C:\fb>fbc fbiide.bas
fptest.bas(1) : error 67: Forward references not allowed, found: 'ptr'

dim shared FunctionPtr as function ptr
                                   ^

[v3cz0r]

The problem is that id you use FUNCTION to declare the pointer, then you need the explicity return type as it can't be guessed (function pointers have no names), so use SUB instead.

If you do "foo as SUB" or "foo as FUNCTION as sometype", foo is already a pointer, don't add "ptr" after it, or it will be a pointer to a pointer and things get nasty..

[fsw]

Why using ASM? Declare it as a function pointer.. you can do

Code:

type myfuncptr as sub(byval as string, byval as string, byval as string)

    dim as myfuncptr f1, f2, f3, ...

    f1("a", "b", "c")

with 0.13 (and w/o the typedef w/ 0.12 and below), no temp strings needed or whatever.

This is strange...
It works :o

FreeBasic is an excellent compiler

[v3cz0r]

Hmm, 2 error messages were missing, so the "Forward references..." msg was shown, it should be "Expected explicit result type".

[dumbledore]

i tried to get it to work under linux, but am having some problems.
i think that in order to compile right it needs the flag "-lwx-c" but fb is passing "-llibwx-c"... any way around this?

[v3cz0r]

Change the header to:

#ifdef FB__WIN32
#inclib "libwc-x"
#else
#inclib "wc-x"
#endif

[dumbledore]

still having big problems... i get a lot of strange errors from the wx-c lib... here's just a few:

/usr/lib/libwx-c.so: undefined reference to `_ZNK14wxBitmapButton8GetLabelEv@WXU_2.5'
/usr/lib/libwx-c.so: undefined reference to `wxEVT_COMMAND_RADIOBOX_SELECTED@WXU_2.5'
/usr/lib/libwx-c.so: undefined reference to `wxEVT_SCROLL_THUMBRELEASE@WXU_2.5'
/usr/lib/libwx-c.so: undefined reference to `_ZN12wxEvtHandler9TryParentER7wxEvent@WXU_2.5'
/usr/lib/libwx-c.so: undefined reference to `_ZN10wxComboBox8DoInsertERK8wxStringi@WXU_2.5'
/usr/lib/libwx-c.so: undefined reference to `_ZNK7wxEvent12GetTimestampEv@WXU_2.5'

there's at least 1000 of these

[dumbledore]

oops, guess i need to #inclib "wx_gtk-2.5" too...
unfortunately, i get

godzilla FreeBASIC # emerge wxGTK-2.5
Calculating dependencies

!!! Problem in x11-libs/wxGTK-2.5 dependencies.
!!! "Specific key requires an operator (x11-libs/wxGTK-2.5) (try adding an '=')" exceptions

when trying to install it under gentoo...