diff --git a/declarative/lineedit.go b/declarative/lineedit.go
index b11e2f8e..92830570 100644
--- a/declarative/lineedit.go
+++ b/declarative/lineedit.go
@@ -13,9 +13,10 @@ import (
 type CaseMode uint32
 
 const (
-	CaseModeMixed CaseMode = CaseMode(walk.CaseModeMixed)
-	CaseModeUpper CaseMode = CaseMode(walk.CaseModeUpper)
-	CaseModeLower CaseMode = CaseMode(walk.CaseModeLower)
+	CaseModeMixed  CaseMode = CaseMode(walk.CaseModeMixed)
+	CaseModeUpper  CaseMode = CaseMode(walk.CaseModeUpper)
+	CaseModeLower  CaseMode = CaseMode(walk.CaseModeLower)
+	CaseModeNumber CaseMode = CaseMode(walk.CaseModeNumber)
 )
 
 type LineEdit struct {
diff --git a/lineedit.go b/lineedit.go
index 75bbc672..f66d5bd1 100644
--- a/lineedit.go
+++ b/lineedit.go
@@ -21,6 +21,7 @@ const (
 	CaseModeMixed CaseMode = iota
 	CaseModeUpper
 	CaseModeLower
+	CaseModeNumber
 )
 
 const (
@@ -204,6 +205,9 @@ func (le *LineEdit) SetCaseMode(mode CaseMode) error {
 		set = win.ES_LOWERCASE
 		clear = win.ES_UPPERCASE
 
+	case CaseModeNumber:
+		set = win.ES_NUMBER
+
 	default:
 		panic("invalid CaseMode")
 	}