Marc Santhoff napisał(a):
Hi,
from studying the patch and searching for information on setting color
on gtk i wonder if setting the flags on the corresponding GtkStyle is
the missing part. Maybe this is done in initializations somewhere I
didn't look at.
I found the following piece of documentation (without knowing where it's
coming from, there is only a mail address in a document titled "GTK
colors mini-FAQ"):
Thx, its helpful, I forget about styleunref,
But in LCL is more problem
1. Many components has more than one widgets (for example tButton has
two) and I don;t want to create new style for everyone
2. Set color must be invoked in proper way, during initialization (this
is done, i think) and runtime
Can You sent me example program to test colors
Darek
<snip>
Short answer: how to set the color of a widget
In GTK+ 1.2:
GtkRcStyle *rc_style;
GdkColor color;
/* There are two good ways to fill in a color */
/* 1) Initialize r/g/b components, they are 16-bit values */
color.red = 65535;
color.green = 0;
color.blue = 0;
/* 2) Parse a color string; an HTML color spec such as "#FF0000"
* is allowed here too
*/
gdk_color_parse ("red", &color);
/* After filling in your GdkColor, create a GtkRcStyle */
rc_style = gtk_rc_style_new ();
/* Set foreground (fg) color in normal state to red */
rc_style->fg[GTK_STATE_NORMAL] = color;
/* Indicate which colors the GtkRcStyle will affect;
* unflagged colors will follow the theme
*/
rc_style->color_flags[GTK_STATE_NORMAL] |= GTK_RC_FG;
gtk_widget_modify_style (widget, rc_style);
gtk_rc_style_unref (rc_style);
</snip>
Immediately before the call to "gtk_widget_modify_style" the flags for
colors to use is set.
A working snippet from my own code looks like this:
<snip>
st: pGtkRcStyle;
cola: TGdkColor;
...
gdk_color_parse(SPEED_COLOR_ACTIVE, @cola);
st := gtk_rc_style_new ();
st^.bg[GTK_STATE_ACTIVE] := cola;
st^.color_flags[GTK_STATE_ACTIVE] :=
st^.color_flags[GTK_STATE_ACTIVE] OR GTK_RC_BG;
gtk_widget_modify_style(GTK_WIDGET(TState(_me).scales[0]), st);
</snip>
HTH,
Marc
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