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MILERR_MISMATCHED_SIZE
MILERR_MISMATCHED_SIZE is a Windows Media Integration Layer (MIL) HRESULT. It indicates that a rendering resource, surface, bitmap, or related object has dimensions inconsistent with the request.
Diagnostic discriminator: Record logical size, pixel size, stride, DPI, and target dimensions at the failing call. If recreating size-dependent resources after a resize makes the same content render, stale or inconsistent resource dimensions caused the mismatch.
What to check for MILERR_MISMATCHED_SIZE
- Compare source, destination, stride, and DPI-adjusted dimensions using the same unit system.
- Recreate size-dependent resources after resizing a window, monitor, or render target.
- Check integer rounding and pixel-format alignment when converting logical layout size to a backing surface size.
Microsoft documentation about WPF hardware-accelerated rendering
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