I could manage to show the bitmap as background of a CCanvas class:
// delcare resource. This is important #resource "\\Images\\long.bmp" // create canvas int width=100; int height=100; string cv_name="cv1"; CCanvas* cv=new CCanvas; string bmp="::Images\\long.bmp"; ResetLastError(); // create the canvas bool bret=cv.CreateBitmapLabel(cv_name,10,10,width,height,COLOR_FORMAT_XRGB_NOALPHA); // set the bitmpa (CCanvas::LoadFromFile fails) if(!ObjectSetString(_chart_id,cv_name,OBJPROP_BMPFILE,bmp)) { Print(__FUNCTION__, ": failed to load the image! Error code = ",GetLastError()); }
Important: The bitmap should not have alpha channel.
Unfortunately, when i do text out on this canvas
cv.TextOut(50,50,"Test Text",0x00FF00,0);
This text is invisble.
How to draw text over the canvase image ?
Nikolai, thank you for your example. But also in your example, TextOut works not.
I could manage to show the bitmap as background of a CCanvas class:
Important: The bitmap should not have alpha channel.
Unfortunately, when i do text out on this canvas
This text is invisble.
How to draw text over the canvase image ?
Nikolai, thank you for your example. But also in your example, TextOut works not.
In my example, there is an alpha channel, so you need to take care that the alpha channel of the text color is not zero or change your bitmap to COLOR_FORMAT_XRGB_NOALPHA..
You are using a completely transparent color.
Alpha channel is the most significant byte.
cv.TextOut(50,50,"Test Text",0xFF00FF00,0);
In my example, to remove the alpha channel, you need to reinitialize an instance named Canvas in OnInit.
delete Canvas; Canvas= new iCanvas(0,0,0,"iCanvas",0,0,COLOR_FORMAT_XRGB_NOALPHA);But then forget about the ability to change transparency.
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Hello,
when i create a bitmap
the bitmap is shown, no problem.
The parameter file has value
\\images\\long.bmp
This works!
When i use
This works not, because a CFIle::Open(file) fails with 5002 "File not found"
or when i pass
images\\long.bmp
i get error "5004 Can not open file"
When using:
i get error 4068 "Resource not found".
The file is definitely there. (The first solution works).
My question:
How to load a bitmap file ?
Thank you