diff --git a/cmd/server/gui_windows.go b/cmd/server/gui_windows.go
index 368853e..35a9777 100644
--- a/cmd/server/gui_windows.go
+++ b/cmd/server/gui_windows.go
@@ -36,6 +36,7 @@ const (
 	WM_CTLCOLOREDIT = 0x0133
 	EM_SETSEL       = 0x00B1
 	EM_REPLACESEL   = 0x00C2
+	WM_GETTEXTLENGTH = 0x000E
 
 	SW_SHOW         = 5
 	IDC_ARROW       = 32512
@@ -186,8 +187,9 @@ func appendText(text string) {
 	if hWndEdit == 0 {
 		return
 	}
-	// 光标移到末尾
-	pSendMessageW.Call(hWndEdit, EM_SETSEL, ^uintptr(0), ^uintptr(0))
+	// 获取文本长度，将光标移到末尾（避免鼠标点击中间位置导致日志插入到光标处）
+	textLen, _, _ := pSendMessageW.Call(hWndEdit, WM_GETTEXTLENGTH, 0, 0)
+	pSendMessageW.Call(hWndEdit, EM_SETSEL, textLen, textLen)
 	// 插入文本
 	ptr, _ := syscall.UTF16PtrFromString(text)
 	pSendMessageW.Call(hWndEdit, EM_REPLACESEL, 1, uintptr(unsafe.Pointer(ptr)))