can anything load images faster than loadpicture?

[crazycarl]

The following code is from Fox's web page:

'Load bitmap
Set Temp = LoadPicture(iFileName)
SelectObject DC, Temp

'Apply values
LoadDC = DC 'Return the device context


I'm using it in a program of mine, but it's kinda slow because I am putting it in part of a loop that loads an image based on X,Y corrodinates. The no 2 corrodinates have the same image.

Is there another way to load an image to memory? maybe with API?

[Sastraxi]

You can just set it in an array of imageboxes at the start, it will take longer to load but..! It will go FAST FAST FAST when you execute the program!

[crazycarl]

that'd work fine for a small number of different images, but my program uses hundreds of different images, I have the program load about 12 images and draw them to the screen. Drawing them to the screen is nice and quick with bltbit, but loading them is slow as hell.

[kedaman]

if you are using compressed file formats like jpeg or gif, try convert them to bmp's first, that will reduce the time to load upto 10 times. Loadpicture should do the approach about as fast as manual get# and createDIBitmap so i don't think you win anything that way.

[Exta-C]

Dude I know a MUCH faster way than those [Well sorta]

Private Declare Function SelectObject Lib "gdi32" (ByVal hDC As Long, ByVal hObject As Long) As Long
Private Declare Function CreateCompatibleDC Lib "gdi32" (ByVal hDC As Long) As Long
Private Declare Function DeleteDC Lib "gdi32" (ByVal hDC As Long) As Long
Private Declare Function LoadImage Lib "user32" Alias "LoadImageA" (ByVal hInst As Long, ByVal lpsz As String, ByVal un1 As Long, ByVal n1 As Long, ByVal n2 As Long, ByVal un2 As Long) As Long
Private Declare Function DeleteObject Lib "gdi32" (ByVal hObject As Long) As Long

'Constants for the GenerateDC function
'**LoadImage Constants**
Const IMAGE_BITMAP As Long = 0
Const LR_LOADFROMFILE As Long = &H10
Const LR_CREATEDIBSECTION As Long = &H2000
Const LR_DEFAULTSIZE As Long = &H40
'****************************************

Public Function GenerateDC(FileName As String, ByRef MemDC As Long, ByRef hBitmap As Long) As Long

'Create a Device Context, compatible with the screen
MemDC = CreateCompatibleDC(0)

If MemDC = 0 Then
    GenerateDC = 0
    Exit Function
End If

'Load the image
hBitmap = LoadImage(0, FileName, IMAGE_BITMAP, 0, 0, LR_DEFAULTSIZE Or LR_LOADFROMFILE Or LR_CREATEDIBSECTION)

If hBitmap = 0 Then 'Failure in loading bitmap
    DeleteDC MemDC
    Exit Function
End If

'Throw the Bitmap into the Device Context
SelectObject MemDC, hBitmap

'Return OK
GenerateDC = 1

End Function
'Deletes a generated DC
Private Function DeleteGeneratedDC(hBitmap As Long, MemDC As Long) As Long

DeleteGeneratedDC = DeleteDC(MemDC)
DeleteObject hBitmap

End Function

[cicciobaciccio1]

Hi Extra-C!
I totally agree. It's exactly the code I'm using to work with bmp.
But what if your bitmaps are in .res file attached to your project?
I tried every "permutation" in the api call but no results: I can't get that f... handle!!!

Please help!
Thanks in advance