Added uiControlHandle() and fixed other uiButton issues.

button_windows.c

@@ -38,6 +38,7 @@ uiControl *uiNewButton(const char *text)
 	struct button *b;
 	uiWindowsNewControlParams p;
 	WCHAR *wtext;
+	HWND hwnd;
 
 	b = uiNew(struct button);
 
@@ -52,9 +53,12 @@ uiControl *uiNewButton(const char *text)
 	p.data = b;
 	b->c = uiWindowsNewControl(&p);
 
+	hwnd = (HWND) uiControlHandle(b->c);
 	wtext = toUTF16(text);
-	// TODO set text
+	if (SetWindowTextW(hwnd, wtext) == 0)
+		logLastError("error setting button text in uiNewButton()");
 	uiFree(wtext);
+	SendMessageW(hwnd, WM_SETFONT, (WPARAM) hMessageFont, (LPARAM) TRUE);
 
 	b->onClicked = defaultOnClicked;
 

main_windows.c

@@ -54,3 +54,9 @@ void uiQuit(void)
 {
 	PostQuitMessage(0);
 }
+
+// TODO move somewhere else
+uintptr_t uiControlHandle(uiControl *c)
+{
+	return (*(c->handle))(c);
+}

ui.h

@@ -16,6 +16,7 @@ void uiMain(void);
 void uiQuit(void);
 
 typedef struct uiControl uiControl;
+uintptr_t uiControlHandle(uiControl *);
 
 typedef struct uiWindow uiWindow;
 uiWindow *uiNewWindow(char *, int, int);

window_windows.c

@@ -1,6 +1,9 @@
 // 6 april 2015
 #include "uipriv_windows.h"
 
+// TODOs:
+// - child not set to fit initial size
+
 struct uiWindow {
 	HWND hwnd;
 	uiControl *child;