diff --git a/lcl/api/dllimports/importfuncs.go b/lcl/api/dllimports/importfuncs.go
index f22dba7..d3d5acb 100644
--- a/lcl/api/dllimports/importfuncs.go
+++ b/lcl/api/dllimports/importfuncs.go
@@ -25,7 +25,7 @@ func internalGetImportFunc(uiLib DLL, table []*ImportTable, index int) ProcAddr
 		var err error
 		item.addr, err = uiLib.GetProcAddr(item.name)
 		if err != nil {
-			fmt.Println(err)
+			fmt.Println(err, item.name)
 			return 0
 		}
 		atomic.StorePointer((*unsafe.Pointer)(unsafe.Pointer(&table[index].addr)), unsafe.Pointer(item.addr))
diff --git a/lcl/api/energy_api.go b/lcl/api/energy_api.go
index deed4ae..aa499c9 100644
--- a/lcl/api/energy_api.go
+++ b/lcl/api/energy_api.go
@@ -14,6 +14,8 @@ package api
 
 import "github.com/energye/golcl/lcl/api/dllimports"
 
+var releaseCallback func()
+
 func APIInit() {
 	uiLib = loadUILib()
 }
@@ -25,6 +27,16 @@ func ImportDefFunc(importTable []*dllimports.ImportTable, index int) dllimports.
 
 // EnergyLibRelease 在energy中释放
 func EnergyLibRelease() {
+	if releaseCallback != nil {
+		releaseCallback()
+	}
 	callGC()
 	closeLib()
 }
+
+// SetReleaseCallback 应用运行结束后释放资源之前执行
+func SetReleaseCallback(fn func()) {
+	if releaseCallback == nil {
+		releaseCallback = fn
+	}
+}
diff --git a/lcl/api/importdef.go b/lcl/api/importdef.go
index 52ad9e2..1936d92 100644
--- a/lcl/api/importdef.go
+++ b/lcl/api/importdef.go
@@ -27,6 +27,9 @@ func Application_CreateForm(app uintptr) uintptr {
 
 func Application_Run(app uintptr) {
 	defer func() {
+		if releaseCallback != nil {
+			releaseCallback()
+		}
 		// 开启了finalizerOn选项后，以防止关闭库后GC还没开始调用。
 		callGC()
 		// 运行结束后就结束close掉lib，不然他不会关掉的