Mega Code Archive
Bitmaps and captions on tbitbtn
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Question:
When I use BitBtn, the Caption(text) and bitmap file cannot be
seen at the same time. How can I work around this?
Answer:
This can happen if the bitmap is too large. The TBitBtn class
displays the bitmap first, and then displays the caption above,
below, to the right, or to the left, of the bitmap (depending on the
Layout property). If the bitmap is as wide as the button, then there
isn't any room to display the caption.
If you are trying to use bitmaps which are the same size as your
button (and you want the caption displayed on top of the bitmap), you
will need to create a bitmap image with the captioned text drawn onto
the bitmap's canvas.
Example:
var
bm : TBitmap;
OldBkMode : integer;
begin
bm := TBitmap.Create;
bm.Width := BitBtn1.Glyph.Width;
bm.Height := BitBtn1.Glyph.Height;
bm.Canvas.Draw(0, 0, BitBtn1.Glyph);
OldBkMode := SetBkMode(bm.Canvas.Handle, Transparent);
bm.Canvas.TextOut(0, 0, 'The Caption');
SetBkMode(bm.Canvas.Handle, OldBkMode);
BitBtn1.Glyph.Assign(bm);
end;
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