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Fixed issue #91 from github (where HBITMAP was getting GC'd by java.

This commit is contained in:
nathan 2018-10-22 13:18:54 +02:00
parent f68c433467
commit d834c2831e
1 changed files with 5 additions and 1 deletions
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6
src/dorkbox/util/jna/windows/HBITMAPWrap.java
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@ -33,6 +33,9 @@ import com.sun.jna.ptr.PointerByReference;
public class HBITMAPWrap extends HBITMAP {
// NOTE: This is a field (instead of private) so that GC does not try to collect this object
private HBITMAP bitmap;
// https://github.com/twall/jna/blob/master/contrib/alphamaskdemo/com/sun/jna/contrib/demo/AlphaMaskDemo.java
private static
HBITMAP createBitmap(BufferedImage image) {
@ -92,7 +95,7 @@ public class HBITMAPWrap extends HBITMAP {
BufferedImage img;
public HBITMAPWrap(BufferedImage img) {
HBITMAP bitmap = createBitmap(img);
bitmap = createBitmap(img);
setPointer(bitmap.getPointer());
this.img = img;
@ -108,6 +111,7 @@ public class HBITMAPWrap extends HBITMAP {
if (Pointer.nativeValue(getPointer()) != 0) {
GDI32.DeleteObject(this);
setPointer(new Pointer(0));
bitmap = null;
}
}