关于CreateSurface的问题

2011-11-21 02:00:07 472 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

HarmonyOS 实战开发 —— C-API版本XComponent接入【代码】HarmonyOS 实战开发 —— C-API版本XComponent接入。阅读详情

DDSURFACEDESC2 ddsd2;
ZeroMemory(&ddsd2, sizeof(ddsd2));
ddsd2.dwSize = sizeof(ddsd2);
ddsd2.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN | DDSCAPS_VIDEOMEMORY;
ddsd2.dwFlags = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PIXELFORMAT;
ddsd2.dwWidth = /*MAX_DDRAW_WIDTH*/m_nWidthBuffer;
ddsd2.dwHeight = /*MAX_DDRAW_HEIGHT*/m_nHeightBuffer;
ddsd2.ddpfPixelFormat.dwSize = sizeof(DDPIXELFORMAT);
ddsd2.ddpfPixelFormat.dwFlags = DDPF_RGB;
ddsd2.ddpfPixelFormat.dwYUVBitCount = 32;
ddsd2.ddpfPixelFormat.dwRBitMask = 0x00FF0000;
ddsd2.ddpfPixelFormat.dwGBitMask = 0x0000FF00;
ddsd2.ddpfPixelFormat.dwBBitMask = 0x000000FF;
int nResult = m_lpDD7->CreateSurface(&ddsd2, &m_lpBuffer, NULL);

在xp系统下能正常创建，但是当系统锁屏时（win+L）,创建失败，提示DDERR_NODIRECTDRAWHW，这是怎么回事？

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