c++ - Problems with ID2D1bitmap -


i'm trying save id2d1bitmap file according how save id2d1bitmap png file

can done in windows 7? without platform update?

i unhandled exception. (aceess violation reading) @ :

if (succeeded(hr)) {     hr = m_pwicfactory->createbitmap(         sc_bitmapwidth,         sc_bitmapheight,         guid_wicpixelformat32bpppbgra,         wicbitmapcacheonload,         &pwicbitmap         ); }

i've declared m_pwicfactory & m_pdirect2dfactory as:

id2d1factory* m_pdirect2dfactory; iwicimagingfactory *m_pwicfactory;

can 1 explain me problem?

i'm pretty sure you've null m_pwicfactory (because post you've linked doesn't contain code). did initialize first before usage? done member function , called before other operations require factory performed.

hresult createdeviceindependentresources() {     hresult hr;      // create direct2d factory.     hr = d2d1createfactory(d2d1_factory_type_single_threaded, &m_pdirect2dfactory);      if (succeeded(hr))     {         // create wic factory.         cocreateinstance(             clsid_wicimagingfactory,             null,             clsctx_inproc_server,             iid_iwicimagingfactory,             reinterpret_cast<void **>(&m_pwicfactory)             );     }     return hr; }

refer using windows imaging component in msdn more information.


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