So when I try to compile and run the cairo examples from the 32-bit FreeBASIC distribution with your headers on my 64-bit system and compiler, I get a seg fault in cairo_paint(). Perhaps something still isn't quite right with the new headers on 64-bit systems?
For example:
Code: Select all
'' Cairo clock. Translated from the C example written by Writser Cleveringa
'' Details: http://cairographics.org/documentation/
#include once "cairo/cairo.bi"
#include once "datetime.bi"
Const SCREEN_W = 400
Const SCREEN_H = 300
Const PI = 3.14159265358979323846#
ScreenRes SCREEN_W, SCREEN_H, 32
''
'' Create a cairo drawing context, using the FB screen as surface.
''
Dim As cairo_surface_t Ptr surface = _
cairo_image_surface_create_for_data(ScreenPtr(), _
CAIRO_FORMAT_ARGB32, SCREEN_W, SCREEN_H, _
SCREEN_W * SizeOf(Integer))
Dim As cairo_t Ptr c = cairo_create(surface)
cairo_scale(c, SCREEN_W, SCREEN_H)
Do
ScreenLock()
''
'' Draw a clock
''
'' compute the angles for the indicators of our clock
Dim As Double minutes = Minute(Now()) * PI / 30
Dim As Double hours = Hour(Now()) * PI / 6
Dim As Double seconds = Second(Now()) * PI / 30
'' Draw the entire context white.
cairo_set_source_rgba(c, 1, 1, 1, 1)
cairo_paint(c)
'' Who doesn't want all those nice line settings :)
cairo_set_line_cap(c, CAIRO_LINE_CAP_ROUND)
cairo_set_line_width(c, 0.1)
'' Translate to the center of the rendering context,
'' and draw a black clock outline.
cairo_set_source_rgba(c, 0, 0, 0, 1)
cairo_translate(c, 0.5, 0.5)
cairo_arc(c, 0, 0, 0.4, 0, PI * 2)
cairo_stroke(c)
'' Draw a white dot on the current second.
cairo_set_source_rgba(c, 1, 1, 1, 0.6)
cairo_arc(c, Sin(seconds) * 0.4, -Cos(seconds) * 0.4, 0.05, 0, PI * 2)
cairo_fill(c)
'' Draw the minutes indicator
cairo_set_source_rgba(c, 0.2, 0.2, 1, 0.6)
cairo_move_to(c, 0, 0)
cairo_line_to(c, Sin(minutes) * 0.4, -Cos(minutes) * 0.4)
cairo_stroke(c)
'' Draw the hours indicator
cairo_move_to(c, 0, 0)
cairo_line_to(c, Sin(hours) * 0.2, -Cos(hours) * 0.2)
cairo_stroke(c)
ScreenUnlock()
Sleep 1000
Loop While (Len(Inkey()) = 0)
'' Clean up the cairo context
cairo_destroy(c)
