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-rw-r--r--src/nativewindow/classes/jogamp/nativewindow/windows/GDISurface.java11
1 files changed, 5 insertions, 6 deletions
diff --git a/src/nativewindow/classes/jogamp/nativewindow/windows/GDISurface.java b/src/nativewindow/classes/jogamp/nativewindow/windows/GDISurface.java
index 4da48bdae..c24f64b32 100644
--- a/src/nativewindow/classes/jogamp/nativewindow/windows/GDISurface.java
+++ b/src/nativewindow/classes/jogamp/nativewindow/windows/GDISurface.java
@@ -74,13 +74,12 @@ public class GDISurface extends ProxySurface {
@Override
final protected void unlockSurfaceImpl() {
- if (0 == surfaceHandle) {
- throw new InternalError("surface not acquired: "+this+", thread: "+Thread.currentThread().getName());
- }
- if(0 == GDI.ReleaseDC(windowHandle, surfaceHandle)) {
- throw new NativeWindowException("DC not released: "+this+", isWindow "+GDI.IsWindow(windowHandle)+", werr "+GDI.GetLastError()+", thread: "+Thread.currentThread().getName());
+ if (0 != surfaceHandle) {
+ if(0 == GDI.ReleaseDC(windowHandle, surfaceHandle)) {
+ throw new NativeWindowException("DC not released: "+this+", isWindow "+GDI.IsWindow(windowHandle)+", werr "+GDI.GetLastError()+", thread: "+Thread.currentThread().getName());
+ }
+ surfaceHandle=0;
}
- surfaceHandle=0;
}
@Override