Implemented uiButton on Mac OS X. Now to fix build issues and test...

new/button_darwin.m

@@ -0,0 +1,57 @@
+// 7 april 2015
+#import "uipriv_darwin.h"
+
+@interface button : NSObject
+@property uiControl *c;
+@property void (*onClicked)(uiControl *, void *);
+@property void *onClickedData;
+@end
+
+@implementation button
+
+- (IBAction)buttonClicked:(id)sender
+{
+	(*(self.onClicked))(self.c, self.onClickedData);
+}
+
+@end
+
+static void defaultOnClicked(uiControl *c, void *data)
+{
+	// do nothing
+}
+
+// TODO destruction
+uiControl *uiNewButton(const char *text)
+{
+	button *b;
+	NSButton *bb;
+
+	b = [button new];
+	b->c = uiDarwinNewControl([NSButton class], NO, NO, b);
+
+	bb = (NSButton *) uiDarwinControlData(b->c);
+	[bb setTitle:toNSString(text)];
+	[bb setButtonType:NSMomentaryPushInButton];
+	[bb setBordered:YES];
+	[bb setBezelStyle:NSRoundedBezelStyle];
+	setStandardControlFont((NSControl *) bb);
+
+	[bb setTarget:b];
+	[bb setAction:@selector(buttonClicked:)];
+
+	b->onClicked = defaultOnClicked;
+
+	return b->c;
+}
+
+// TODO text
+
+void uiButtonOnClicked(uiControl *c, void (*f)(uiControl *, void *), void *data)
+{
+	button *b;
+
+	b = (button *) uiDarwinControlData(c);
+	b->onClicked = f;
+	b->onClickedData = data;
+}

new/uipriv_darwin.h

@@ -12,6 +12,9 @@ extern void *uiAlloc(size_t);
 extern void *uiRealloc(void *, size_t);
 extern void uiFree(void *);
 
+// util_darwin.m
+extern void setStandardControlFont(NSControl *);
+
 // container_darwin.m
 @interface uiContainer : NSView
 @property uiControl *child;

new/util_darwin.m

@@ -0,0 +1,8 @@
+// 7 april 2015
+#import "uipriv_darwin.h"
+
+// also fine for NSCells and NSTexts (NSTextViews)
+void setStandardControlFont(NSControl *control)
+{
+	[control setFont:[NSFont systemFontOfSize:[NSFont systemFontSizeForControlSize:NSRegularControlSize]]];
+}