Introducing new method to get handle

also encapsulating handle field to private. It cant be accessed from
outside of this class

Author: ShahzaibIbrahim

bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/Font.java

@@ -50,6 +50,11 @@ public final class Font extends Resource {
 	 */
 	public long handle;
 
+	/**
+	 * this field is used to store fontData provided during initialization
+	 */
+	private final FontData fontData;
+
 	/**
 	 * The zoom in % of the standard resolution used for conversion of point height to pixel height
 	 * (Warning: This field is platform dependent)
@@ -67,12 +72,14 @@ public final class Font extends Resource {
  */
 Font(Device device) {
 	super(device);
+	this.fontData = null;
 	this.zoom = DPIUtil.getNativeDeviceZoom();
 	this.fontHeight = 0;
 }
 
 private Font(Device device, long handle, int zoom) {
 	super(device);
+	this.fontData = null;
 	this.handle = handle;
 	this.zoom = zoom;
 	this.fontHeight = device.computePoints(fetchLogFontData(), handle, zoom);
@@ -101,15 +108,15 @@ private Font(Device device, long handle, int zoom) {
 public Font(Device device, FontData fd) {
 	super(device);
 	this.zoom = DPIUtil.getNativeDeviceZoom();
-	init(fd);
+	this.fontData = fd;
 	this.fontHeight = fd.height;
 	init();
 }
 
 private Font(Device device, FontData fd, int zoom) {
 	super(device);
 	this.zoom = zoom;
-	init(fd);
+	this.fontData = fd;
 	this.fontHeight = fd.height;
 	init();
 }
@@ -148,7 +155,7 @@ public Font(Device device, FontData[] fds) {
 	}
 	this.zoom = DPIUtil.getNativeDeviceZoom();
 	FontData fd = fds[0];
-	init(fds[0]);
+	this.fontData = fd;
 	this.fontHeight = fd.height;
 	init();
 }
@@ -181,7 +188,7 @@ public Font(Device device, String name, int height, int style) {
 	super(device);
 	if (name == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
 	this.zoom = DPIUtil.getNativeDeviceZoom();
-	init(new FontData (name, height, style));
+	this.fontData = new FontData (name, height, style);
 	this.fontHeight = height;
 	init();
 }
@@ -190,7 +197,7 @@ public Font(Device device, String name, int height, int style) {
 	super(device);
 	if (name == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
 	this.zoom = DPIUtil.getNativeDeviceZoom();
-	init(new FontData (name, height, style));
+	this.fontData = new FontData (name, height, style);
 	this.fontHeight = height;
 	init();
 }
@@ -294,6 +301,28 @@ public String toString () {
 	return "Font {" + handle + "}";
 }
 
+/**
+ * <b>IMPORTANT:</b> This method is not part of the public
+ * API for Font. It is marked public only so that it
+ * can be shared within the packages provided by SWT. It is not
+ * available on all platforms, and should never be called from
+ * application code.
+ *
+ * Creates a new handle for the requested font or returns the existing one
+ *
+ * @param font the font to get the handle of
+ *
+ * @return handle of the font
+ *
+ * @noreference This method is not intended to be referenced by clients.
+ */
+public static long win32_getHandle (Font font) {
+	if(font.handle == 0 && font.fontData != null) {
+		font.init(font.fontData);
+	}
+	return font.handle;
+}
+
 /**
  * Invokes platform specific functionality to allocate a new font.
  * <p>