added a way to create fonts with specified pixel size

[wxWidgets.git] / docs / latex / wx / image.tex

diff --git a/docs/latex/wx/image.tex b/docs/latex/wx/image.tex
index 0b0719ea469a95a92e41629049d0d465dbf34093..fd4451655d5b2171b91c233002211c6fb2b40a1b 100644 (file)
--- a/docs/latex/wx/image.tex
+++ b/docs/latex/wx/image.tex
@@ -257,6 +257,22 @@ WX_DECLARE_EXPORTED_HASH_MAP(unsigned long, wxImageHistogramEntry,
 
 Returns number of colours in the histogram.
 
+\membersection{wxImage::ConvertAlphaToMask}\label{wximageconvertalphatomask}
+
+\func{bool}{ConvertAlphaToMask}{\param{unsigned char}{ threshold = 128}}
+
+If the image has alpha channel, this method converts it to mask. All pixels
+with alpha value less than \arg{threshold} are replaced with mask colour
+and the alpha channel is removed. Mask colour is chosen automatically using
+\helpref{FindFirstUnusedColour}{wximagefindfirstunusedcolour}.
+
+If the image image doesn't have alpha channel,
+ConvertAlphaToMask does nothing.
+
+\wxheading{Return value}
+
+\false if FindFirstUnusedColour returns \false, \true otherwise. 
+
 \membersection{wxImage::ConvertToBitmap}\label{wximageconverttobitmap}
 
 \constfunc{wxBitmap}{ConvertToBitmap}{\void}
@@ -414,8 +430,10 @@ Returns the blue intensity at the given coordinate.
 Returns the image data as an array. This is most often used when doing
 direct image manipulation. The return value points to an array of
 characters in RGBRGBRGB$\ldots$ format in the top-to-bottom, left-to-right
-order, that is the first RGB triplet corresponds to the pixel $(0, 0)$, the
-second one --- to $(0, 1)$ and so on.
+order, that is the first RGB triplet corresponds to the pixel first pixel of
+the first row, the second one --- to the second pixel of the first row and so
+on until the end of the first row, with second row following after it and so
+on.
 
 You should not delete the returned pointer nor pass it to
 \helpref{wxImage::SetData}{wximagesetdata}.