Wpf 为什么我的PictureBox加载例程会泄漏内存?
我一直在尝试,但我的解决方案似乎存在内存泄漏:Wpf 为什么我的PictureBox加载例程会泄漏内存?,wpf,memory-leaks,c++-cli,picturebox,Wpf,Memory Leaks,C++ Cli,Picturebox,我一直在尝试,但我的解决方案似乎存在内存泄漏: 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
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);
}
据我所见,我明确地释放了内存,那么为什么每次单击按钮时任务管理器都会报告内存增加了约24k?两个词:垃圾收集奇怪的是,这看起来实际上是鼠标悬停在按钮上造成的。每次这样做时,内存都会跳跃,但在足够多的鼠标移动之后,内存使用就会稳定下来。实际点击按钮(即调用我的例程)不会导致任何泄漏。这是我最初的反应,但明确删除的对象应该可以避免这些影响,不是吗?我认为清理只会清理非托管的一面。其余的将在稍后由GC清理。。。