我一直trying to swap images in a PictureBox in a C++/CLI application但我的解决方案似乎有内存泄漏:为什么我的PictureBox加载例程泄漏内存?
System::Void button1_Click(System::Object^ sender, System::EventArgs^ e)
{
// Pick a new bitmap
static int resource = IDB_BITMAP1;
if(resource == IDB_BITMAP2)
{
resource = IDB_BITMAP1;
}
else
{
resource = IDB_BITMAP2;
}
// Get the primary module
Module^ mod = Assembly::GetExecutingAssembly()->GetModules()[0];
// Get the instance handle
IntPtr hinst = Marshal::GetHINSTANCE(mod);
// Get the bitmap as unmanaged
HANDLE hbi = LoadImage((HINSTANCE) hinst.ToPointer(),MAKEINTRESOURCE(resource),IMAGE_BITMAP,0,0,LR_DEFAULTCOLOR);
// Import the unmanaged bitmap into the managed side
Bitmap^ bi = Bitmap::FromHbitmap(IntPtr(hbi));
// Remove any previously stored images
if(m_pictureBox1->Image != nullptr)
{
delete m_pictureBox1->Image;
m_pictureBox1->Image = nullptr;
}
// Insert the bitmap into the picture box
m_pictureBox1->Image = bi;
// Free up the unmanaged bitmap
DeleteObject(hbi);
}
据我所看到的,我明确地释放内存那么,为什么任务管理器报告的〜24K的内存增加每次点击按钮?
这是我最初的反应,但明确删除的对象应该绕过这些效果不应该? –
我认为清理只会清理未管理的一面。其余的将在稍后的时间点由GC进行清理... – KristoferA
这将有道理.. –