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flatlaf-natives-windows: reworked linking/loading of jawt.dll; now loading jawt.dll when first used (issue #673)

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Karl Tauber
2023-07-01 18:16:59 +02:00
parent 6f6a860887
commit 98f8557392
7 changed files with 99 additions and 21 deletions
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21
flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatNativeLibrary.java
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@@ -61,13 +61,20 @@ class FlatNativeLibrary
classifier = SystemInfo.isX86_64 ? "windows-x86_64" : "windows-x86";
ext = "dll";
// In Java 8, load jawt.dll (part of JRE) explicitly because it
// is not found when running application with <jdk>/bin/java.exe.
// When using <jdk>/jre/bin/java.exe, it is found.
// jawt.dll is located in <jdk>/jre/bin/.
// Java 9 and later do not have this problem,
// but load jawt.dll anyway to be on the safe side.
loadJAWT();
// Do not load jawt.dll (part of JRE) here explicitly because
// the FlatLaf native library flatlaf.dll may be loaded very early on Windows
// (e.g. from class com.formdev.flatlaf.util.SystemInfo) and before AWT is
// initialized (and awt.dll is loaded). Loading jawt.dll also loads awt.dll.
// In Java 8, loading jawt.dll before AWT is initialized may load
// a wrong version of awt.dll if a newer Java version (e.g. 19)
// is in PATH environment variable. Then Java 19 awt.dll and Java 8 awt.dll
// are loaded at same time and calling JAWT_GetAWT() crashes the application.
//
// To avoid this, flatlaf.dll is not linked to jawt.dll,
// which avoids loading jawt.dll when flatlaf.dll is loaded.
// Instead flatlaf.dll dynamically loads jawt.dll when first used,
// which is guaranteed after AWT initialization.
} else if( SystemInfo.isLinux && SystemInfo.isX86_64 ) {
// Linux: requires x86_64