BitBlt from Resource File

[Pickleloaf]

I want be bitblt stuff from bitmaps located in a resource file. As far as I know, the bitmaps are STDPICTUREs. However, bitblt only deals with DCs.

How do I make a DC for the picture in the resource file?

What's the deal with DC's anyway (I know they stand for device context, whatever that means)?

[Fox]

You dont make the DC - you get it. The DC is a reference to that surface, like a link to a site .

Now to your problem:

I dont know if resource bitmaps are of StdPicture, but the following function will load IPictureDisp -pictures and get the DC, maybe it will work with StdPics too

Function LoadDC(iFileName As String) As Long
    Dim DC As Long
    Dim Temp As IPictureDisp 'Change to StdPicture
    
    'Create compatible DC
    DC = CreateCompatibleDC(frmMain.hdc)
    
    'Error: Can't create compatible DC
    If DC < 1 Then: Exit Function
    
    'Load bitmap
    Set Temp = LoadPicture(iFileName) 'Put your bitmap resource here
    SelectObject DC, Temp
    
    'Apply values
    LoadDC = DC
    
    'In case you need the Size
    'w = frmMain.ScaleX(Temp.Width)
    'h = frmMain.ScaleY(Temp.Height)
    
    'Release memory
    DeleteObject Temp
    Set Temp = Nothing
End Function

[Nirces]

The Above code will work fine with resource files, I have used them myself with the same code, all you need to do is to replace:

Set Temp = LoadPicture(iFileName) 'Put your bitmap resource here

with:

Set Temp = LoadResPicture(indexNo)