Compilation error in Snippet382 on Linux/macOS

[ptziegler]

Describe the bug

This snippet sets the nativeZoom field of the GCData object. However, this field only exists on Windows, leading to a compilation error on both Linux and macOS.

eclipse.platform.swt/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet382.java

Lines 105 to 113 in ca113ca

	private void drawImages(GC mainGC, GCData gcData, String text, int y, final Image imageWithFileNameProvider) {
	gcData.nativeZoom = 100;
	mainGC.drawText(text, 0, y);
	mainGC.drawImage(imageWithFileNameProvider, 50, y);
	gcData.nativeZoom = 150;
	mainGC.drawImage(imageWithFileNameProvider, 100, (int) (y/1.5));
	gcData.nativeZoom = 200;
	mainGC.drawImage(imageWithFileNameProvider, 150, y/2);
	}

Screenshots

Environment:

1. Select the platform(s) on which the behavior is seen:

• • All OS
• • Windows
• • Linux
• • macOS

[akurtakov]

Seems caused by #1214

[HeikoKlare]

Looks like you have an invalid state of a .classpath file in the snippets project. The snippet is Windows only and accordingly excluded from the classpath files for MacOS and Linux:

eclipse.platform.swt/examples/org.eclipse.swt.snippets/.classpath_cocoa

Line 5 in ca113ca

<classpathentry excluding="org/eclipse/swt/snippets/Snippet123.java|org/eclipse/swt/snippets/Snippet174.java|org/eclipse/swt/snippets/Snippet186.java|org/eclipse/swt/snippets/Snippet187.java|org/eclipse/swt/snippets/Snippet195.java|org/eclipse/swt/snippets/Snippet199.java|org/eclipse/swt/snippets/Snippet209.java|org/eclipse/swt/snippets/Snippet261.java|org/eclipse/swt/snippets/Snippet262.java|org/eclipse/swt/snippets/Snippet263.java|org/eclipse/swt/snippets/Snippet264.java|org/eclipse/swt/snippets/Snippet265.java|org/eclipse/swt/snippets/Snippet305.java|org/eclipse/swt/snippets/Snippet341.java|org/eclipse/swt/snippets/Snippet81.java|org/eclipse/swt/snippets/Snippet83.java|org/eclipse/swt/snippets/Snippet382.java" kind="src" path="src"/>

eclipse.platform.swt/examples/org.eclipse.swt.snippets/.classpath_gtk

Line 5 in ca113ca

<classpathentry excluding="org/eclipse/swt/snippets/Snippet123.java|org/eclipse/swt/snippets/Snippet174.java|org/eclipse/swt/snippets/Snippet186.java|org/eclipse/swt/snippets/Snippet187.java|org/eclipse/swt/snippets/Snippet195.java|org/eclipse/swt/snippets/Snippet199.java|org/eclipse/swt/snippets/Snippet209.java|org/eclipse/swt/snippets/Snippet261.java|org/eclipse/swt/snippets/Snippet262.java|org/eclipse/swt/snippets/Snippet263.java|org/eclipse/swt/snippets/Snippet264.java|org/eclipse/swt/snippets/Snippet265.java|org/eclipse/swt/snippets/Snippet305.java|org/eclipse/swt/snippets/Snippet341.java|org/eclipse/swt/snippets/Snippet81.java|org/eclipse/swt/snippets/Snippet83.java|org/eclipse/swt/snippets/Snippet382.java" kind="src" path="src"/>

You should remove the existing .classpath file in the snippet project and either copy and rename the correct or, if you have an Oomphed setup, perform setup tasks and have Oomph fix that for your.

[ptziegler]

Hm... the classpath is correctly pointing to .classpath_gtk:

And there the snippet is correctly excluded:

So it seems like the classpath is simply not updated properly :/ I've checked out a fresh workspace where the error doesn't show up anymore.

Thanks you both for your input!

[HeikoKlare]

You are showing the linked .classpath file of the SWT fragment (like org.eclipse.swt.gtk.linux.x86_64) , not of the snippets project (i.e., org.eclipse.swt.snippets). In the snippets project, there is no linking of the correct .classpath file. It is simply copied by the Oomph setup (or by hand, in a manual setup). This is how it looks like: