From 3c55df703cdf5244f7f2b859d8ead5f36a89e822 Mon Sep 17 00:00:00 2001
From: zqm <zqm@example.com>
Date: Mon, 10 Nov 2025 13:40:25 +0800
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---
 Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs b/Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs
index 53165dd..9f82bb8 100644
--- a/Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs
+++ b/Windows/CS/Framework4.0/Toprie/Toprie/Setting.cs
@@ -464,8 +464,8 @@ namespace JoyD.Windows.CS
                 }
                 
                 // 检查当前是否在温差图绘制状态下
-                // 只有同时满足：处于温差图绘制模式、有选中的图例行、并且dataGridViewTempDiff控件可见时，才显示画笔大小按钮
-                if (_isTempDiffDrawingMode && dataGridViewTempDiff.SelectedRows.Count > 0 && dataGridViewTempDiff.Visible)
+                // 同时检查选中行和选中单元格，确保点击单元格时也能显示画笔按钮
+                if (_isTempDiffDrawingMode && (dataGridViewTempDiff.SelectedRows.Count > 0 || dataGridViewTempDiff.SelectedCells.Count > 0) && dataGridViewTempDiff.Visible)
                 {
                     // 显示所有画笔大小按钮
                     btnBrushSize1.Visible = true;