Update icons directly to windows rather than modifying
the window's class. Respect custom icons overriden via
the configuration file.
fd.o bugzilla #4491
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Fix prototypes of winOverrideIcon(), winTaskbarIcon() and winOverrideDefaultIcon() to return HICON
Also use HICON type in WINPREFS stucture
Remove various casts these changes make unnecessary
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
fd.o bugzilla #4491
Transparent icon backgrounds appear with black stripes as mask data is incorrectly aligned.
Modified the icon DDB bitmap data alignment to 16 bits
Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>