Microsoft Media Foundation outputs an exception when playing local video
When I use Microsoft Media Foundation to play a local video, a Microsoft C++ exception bad_hresult is displayed in the output window. I want to know if it will affect the video playback. For demonstration, I wrote a simple example: #include…
在使用Agility SDK时,按照文档配置完成之后,不能识别CLSID_D3D12DSRDeviceFactory
问题代码如下: ATL::CComPtr<ID3D12DSRDeviceFactory> pDSRDeviceFactory; D3D12GetInterface(CLSID_D3D12DSRDeviceFactory, IID_PPV_ARGS(&pDSRDeviceFactory)); 错误输出如下: 错误 LNK2001 无法解析的外部符号…
VS2022 debug模式下代码运行错误,怎么回事,如何解决?
我把代码给你,你看看怎么回事?GITHUB网址:https://github.com/lixiang1234/TEST
1>LINK : fatal error LNK1104: 无法打开文件“c.lib”
报错: 生成开始于 22:13... 1>------ 已启动生成: 项目: sca, 配置: Debug x64 ------ 1>LINK : fatal error LNK1104: 无法打开文件“c.lib” 1>已完成生成项目“sca.vcxproj”的操作 - 失败。 ========== 生成: 0 成功,1 失败,1 最新,0 已跳过 ========== ========== 生成 于 22:13 完成,耗时 00.611 秒…
ext-ms-win-oobe-query-l1-1-0.dll
I built a dll with c++/cli in release version ,and use it in a simple C# console project, when it run ,it occur one issue of System.IO.FileNotFoundException,when i checked it Denpendencies ,that a dll called ext-ms-win-oobe-query-l1-1-0.dll loss, and…
vs2022调用Gdiplus的Graphics类,但是提示“不允许使用不完整的类型Gdiplus::Graphics”,各种配置都加好了
#include <windows.h> #include <gdiplus.h> #include <iostream> using namespace Gdiplus; #pragma comment(lib, "Gdiplus.lib") // 全局变量用于存储 GDI+ 的令牌 ULONG_PTR gdiplusToken;
GetConnectedTo接口在win11上出现卡死
我们想开启microphoneboost功能,整体代码参考了微软设备拓扑部分SelectCaptureDevice的示例代码,但最近在win11上会有较低概率出现GetConnectedTo接口卡住的情况,一般卡住1到2分钟可以自动恢复,接口返回值也并没有错误,该接口是否在win11上需要额外的适配?
hr = m_pDWriteFactory->CreateTextFormat这个地方就报错显示说是this 是 nullptr是怎么回事?如何解决?
HRESULT CMainWindow::CreateDeviceIndependentResources(HWND hwnd) { static const WCHAR msc_fontName[] = L"Verdana"; static const FLOAT msc_fontSize = 50; HRESULT hr; ID2D1GeometrySink *pSink = NULL; // Create a Direct2D factory. hr =…
如何实现用代码添加WSD打印机功能
设置中,打印机和扫描仪项中,包含添加设备按钮,点击添加设备按钮,会搜索WSD打印机,在已搜到的打印机中点击添加设备会添加到本地一台WSD打印机 想问一下,要想使用代码实现这一功能,应该如何实现,使用C#或C++都可以,应该使用哪些接口以实现该功能
打断点调试发现m_pDWriteFactory是NULL的,是不是这个问题引起的指针无效
hr = DWriteCreateFactory( DWRITE_FACTORY_TYPE_SHARED, __uuidof(IDWriteFactory), reinterpret_cast<IUnknown **>(&m_pDWriteFactory) );这里面的&m_pDWriteFactory是NULL的,是不是这个问题引起的指针无效
MFC 怎么检查指针的有效性
if (SUCCEEDED(hr)) { // Create a DirectWrite factory. hr = DWriteCreateFactory( DWRITE_FACTORY_TYPE_SHARED, __uuidof(IDWriteFactory), reinterpret_cast<IUnknown **>(&m_pDWriteFactory) ); }这段代码怎么检查指针的有效性
dwrite.lib加载后程序出现读取访问权限冲突this 是 nullptr是怎么回事,如何解决?
断点执行到这里if (SUCCEEDED(hr)) { // Create a DirectWrite factory. hr = DWriteCreateFactory( DWRITE_FACTORY_TYPE_SHARED, __uuidof(m_pDWriteFactory), reinterpret_cast<IUnknown **>(&m_pDWriteFactory) ); }出现 return…
未定义标识符FILE_INFO_BY_HANDLE_CLASS怎么解决?
if (_WIN32_WINNT >= 0x0600) WINBASEAPI BOOL WINAPI SetFileInformationByHandle( _In_ HANDLE hFile, _In_ FILE_INFO_BY_HANDLE_CLASS FileInformationClass, _In_reads_bytes_(dwBufferSize) LPVOID lpFileInformation, In DWORD dwBufferSize ); #endif
ODBC SQLGetData: How to read SQL_LONGVARBINARY?
function SQLGetData: How to read SQL_LONGVARBINARY? sqlserver Data type: varbinary(max) contains about 16000 bytes data
D2d1.lib有两个版本的一个是X86文件夹的,一个是64文件夹的,选择哪一个,才是正确的
D2d1.lib有两个版本的一个是X86文件夹的,一个是64文件夹的,选择哪一个,才是正确的 if (SUCCEEDED(hr)) { // Create a DirectWrite factory. hr = DWriteCreateFactory( DWRITE_FACTORY_TYPE_SHARED, __uuidof(m_pDWriteFactory), reinterpret_cast<IUnknown…
MFC 里面DWriteCreateFactory函数出现LINK2019错误无法解析外部符号怎么回事,求解决?
HRESULT CMainWindow::CreateDeviceIndependentResources() { static const WCHAR msc_fontName[] = L"Verdana"; static const FLOAT msc_fontSize = 50; HRESULT hr; ID2D1GeometrySink *pSink = NULL; // Create a Direct2D factory. hr =…
如何用C++关闭 explorer tab
如何用C++关闭 explorer tab
MFC 调试代码时出现this是nullptr 读取访问权限冲突怎么解决?
ID2D1HwndRenderTarget** hwndRenderTarget; ID2D1Factory* pFactory; CPaintDC dc(this); RECT rc; ::GetClientRect(m_hWnd, &rc); D2D1_SIZE_U size = D2D1::SizeU(rc.right - rc.left, rc.bottom - rc.top); HRESULT hr = S_OK; hr =…
CreateGridPatterentBrush的ID2D1RenderTarget* pRenderTarget调用CreateCompatibleRenderTarget 出现this 是 nullptr怎么解决?
ID2D1RenderTarget* m_pRenderTarget; ID2D1RenderTarget* pRenderTarget; ID2D1BitmapBrush** ppBitmapBrush; ID2D1BitmapRenderTarget* pCompatibleRenderTarget; ID2D1Bitmap* pBitmap; HRESULT CreateGridPatterentBrush(ID2D1RenderTarget*…