`rasSetClientRect`

Resize the page cache's viewport from a client rectangle.

void __stdcall rasSetClientRect(IPGC CachePtr, HDC DC, TIntRect* ClientRect);

Delphi

procedure rasSetClientRect(CachePtr: IPGC; DC: HDC; var ClientRect: TIntRect); stdcall;

Purpose. Resize the page cache's viewport from a client rectangle.

Description. Computes width/height from ClientRect's corners, normalizing a reversed rect (negative width/height) via Abs, and only updates C.Width/C.Height if the resulting size is non-degenerate (both > 0) — a zero-area or unset rect is silently ignored rather than zeroing the viewport. DC is accepted but never read — this function does not touch any device context despite the parameter.

Parameters.

Parameter	Description
`CachePtr`	Target page cache.
`DC`	Accepted but never read.
`ClientRect`	Corners in either order (auto-normalized); ignored entirely if the resulting size is `0` in either dimension.

Return value. None.

C# (P/Invoke)

wrappers/dotnet/LumasPdf.cs

public static extern void rasSetClientRect(IntPtr CachePtr, UIntPtr DC, ref TIntRect ClientRect);

Area

Rendering & Viewer