[reactos] 01/01: [MSPAINT] Fix memory leak of SelectionModel (#2169)

[Katayama Hirofumi MZ]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=3fa95ab912fc38e44d88c…

commit 3fa95ab912fc38e44d88c7a5bce90b0ea9cff697
Author:     Katayama Hirofumi MZ <katayama.hirofumi.mz(a)gmail.com>
AuthorDate: Wed Dec 25 15:46:29 2019 +0900
Commit:     GitHub <noreply(a)github.com>
CommitDate: Wed Dec 25 15:46:29 2019 +0900

    [MSPAINT] Fix memory leak of SelectionModel (#2169)
    
    - Initialize all members in SelectionModel's ctor.
    - Add SelectionModel's dtor.
---
 base/applications/mspaint/selectionmodel.cpp | 24 +++++++++++++++++++++---
 base/applications/mspaint/selectionmodel.h   |  6 ++++++
 2 files changed, 27 insertions(+), 3 deletions(-)

diff --git a/base/applications/mspaint/selectionmodel.cpp
b/base/applications/mspaint/selectionmodel.cpp
index a476594ccc0..53f1395ca0a 100644
--- a/base/applications/mspaint/selectionmodel.cpp
+++ b/base/applications/mspaint/selectionmodel.cpp
@@ -4,6 +4,7 @@
  * FILE:        base/applications/mspaint/selectionmodel.cpp
  * PURPOSE:     Keep track of selection parameters, notify listeners
  * PROGRAMMERS: Benedikt Freisen
+ *              Katayama Hirofumi MZ
  */
 
 /* INCLUDES *********************************************************/
@@ -13,11 +14,28 @@
 /* FUNCTIONS ********************************************************/
 
 SelectionModel::SelectionModel()
+    : m_hDC(CreateCompatibleDC(NULL))
+    , m_hBm(NULL)
+    , m_hMask(NULL)
+    , m_ptStack(NULL)
+    , m_iPtSP(0)
 {
-    m_ptStack = NULL;
-    m_iPtSP = 0;
+    SetRectEmpty(&m_rcSrc);
+    SetRectEmpty(&m_rcDest);
+}
 
-    m_hDC = CreateCompatibleDC(NULL);
+SelectionModel::~SelectionModel()
+{
+    DeleteDC(m_hDC);
+    ResetPtStack();
+    if (m_hBm)
+    {
+        DeleteObject(m_hBm);
+    }
+    if (m_hMask)
+    {
+        DeleteObject(m_hMask);
+    }
 }
 
 void SelectionModel::ResetPtStack()
diff --git a/base/applications/mspaint/selectionmodel.h
b/base/applications/mspaint/selectionmodel.h
index 297d70b161f..c52c743a7af 100644
--- a/base/applications/mspaint/selectionmodel.h
+++ b/base/applications/mspaint/selectionmodel.h
@@ -4,6 +4,7 @@
  * FILE:        base/applications/mspaint/selectionmodel.h
  * PURPOSE:     Keep track of selection parameters, notify listeners
  * PROGRAMMERS: Benedikt Freisen
+ *              Katayama Hirofumi MZ
  */
 
 #pragma once
@@ -39,6 +40,7 @@ private:
 
 public:
     SelectionModel();
+    ~SelectionModel();
     void ResetPtStack();
     void PushToPtStack(LONG x, LONG y);
     void CalculateBoundingBoxAndContents(HDC hDCImage);
@@ -64,4 +66,8 @@ public:
     LONG GetDestRectLeft();
     LONG GetDestRectTop();
     void DrawTextToolText(HDC hDCImage, COLORREF crFg, COLORREF crBg, BOOL bBgTransparent
= FALSE);
+
+private:
+    SelectionModel(const SelectionModel&);
+    SelectionModel& operator=(const SelectionModel&);
 };