每次调整窗口大小时内存都会增加

我创建了一个简单的Win32应用程序，并尝试使用Color填充客户区。 当包含“Clear RenderTarget”行时，我看到每次调整窗口大小时内存都会增加几KB。

我的WindowProc：

LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) { switch (uMsg) { case WM_SIZE: { if (pRenderTarget != NULL) { RECT rc; GetClientRect(globalWindowHandle, &rc); D2D1_SIZE_U size = D2D1::SizeU(rc.right, rc.bottom); pRenderTarget->Resize(size); InvalidateRect(globalWindowHandle, NULL, FALSE); } return 0; } break; case WM_CREATE: { HRESULT dx = D2D1CreateFactory(D2D1_FACTORY_TYPE_SINGLE_THREADED, &pFactory); if (FAILED(dx)) { MessageBox(globalWindowHandle, "Error creating D2D1Factory", "Error", MB_ICONERROR); return -1; } return 0; } break; case WM_KEYDOWN: { int ret = HandleKeyboardInput(uMsg, wParam, lParam); if (ret == 0) { return 0; } } break; case WM_PAINT: { HRESULT hr = CreateGraphicsResources(); if (SUCCEEDED(hr)) { PAINTSTRUCT ps; HDC hdc = BeginPaint(hwnd, &ps); pRenderTarget->BeginDraw(); // Clear RenderTarget pRenderTarget->Clear(D2D1::ColorF(D2D1::ColorF::SkyBlue)); hr = pRenderTarget->EndDraw(); if (FAILED(hr) || hr == D2DERR_RECREATE_TARGET) { pRenderTarget->Release(); pSolidBrush->Release(); pRenderTarget = NULL; pSolidBrush = NULL; } EndPaint(hwnd, &ps); return 0; } } break; case WM_CLOSE: { int box = MessageBox(hwnd, "Would you like to close the editor ?", "Question", MB_OKCANCEL); if (box == IDOK) { DestroyWindow(hwnd); } return 0; } break; case WM_DESTROY: { PostQuitMessage(0); return 0; } break; default: { return DefWindowProc(hwnd, uMsg, wParam, lParam); } break; } return 0; } 

CreateGraphicsResources

 HRESULT CreateGraphicsResources() { HRESULT hr = S_OK; if (pRenderTarget == NULL) { RECT rc; GetClientRect(globalWindowHandle, &rc); D2D1_SIZE_U size = D2D1::SizeU(rc.right, rc.bottom); hr = pFactory->CreateHwndRenderTarget( D2D1::RenderTargetProperties(), D2D1::HwndRenderTargetProperties(globalWindowHandle, size), &pRenderTarget); if (SUCCEEDED(hr)) { const D2D1_COLOR_F color = D2D1::ColorF(1.0f, 1.0f, 1.0f, 0); hr = pRenderTarget->CreateSolidColorBrush(color, &pSolidBrush); if (SUCCEEDED(hr)) { } } } return hr; } 

全局：

 BOOL ctrlPressed = FALSE; HWND globalWindowHandle; ID2D1Factory *pFactory; ID2D1SolidColorBrush *pSolidBrush; ID2D1HwndRenderTarget *pRenderTarget; 

我是否会遗漏一些东西以释放记忆或可能是什么原因？ 如果我调整窗口大小，例如5秒，则内存从4KB增加到22KB。

我的操作系统是Windows 10 x64

Answer 1

这个问题似乎已经解决了。 事实上，内存并没有增加太多，所以OS似乎分配了另一个内存。