GDI+で作成するサムネイルの画質を上げるには？ (ID:139309)

名前

ホームページ(ブログ、Twitterなど)のURL (省略可)

本文

GDI+の関数の記述は、こんなもんでは。直打ちしてるのでミスがあったら直して下さい。

Enum InterpolationMode
    InterpolationModeInvalid = -1,
    InterpolationModeDefault = 0&,
    InterpolationModeLowQuality = 1&,
    InterpolationModeHighQuality = 2&,
    InterpolationModeBilinear = 3&,
    InterpolationModeBicubic = 4&,
    InterpolationModeNearestNeighbor = 5&,
    InterpolationModeHighQualityBilinear = 6&,
    InterpolationModeHighQualityBicubic = 7&
End Enum

Declare Function GdipCreateFromHWND Lib "gdiplus.dll" _
(ByVal hWnd As Long, ByRef RetGpGraphics As Long) As Long

Declare Function GdipCreateBitmapFromGraphics Lib "gdiplus.dll" _
(ByVal Width As Long, ByVal Height As Long, _
 ByVal GpGraphics As Long, ByRef RetGpBitmap As Long) As Long

Declare Function GdipGetImageGraphicsContext Lib "gdiplus.dll" _
(ByVal GpImage As Long, ByRef RetGpGraphics As Long) As Long

Declare Function GdipSetInterpolationMode Lib "gdiplus.dll" _
(ByVal GpGraphics As Long, ByVal InterpolationMode As Long) As Long

Declare Function GdipDrawImageRectI Lib "gdiplus.dll" _
(ByVal GpGraphics As Long, ByVal GpImage As Long, _
 ByVal Left As Long, ByVal Top As Long, _
 ByVal Width As Long, ByVal Height As Long) As Long

←解決時は質問者本人がここをチェックしてください。

戻る