LoadImage() memory leak.

[Neha]

Hi, In my application i have this: HBITMAP hImage; hImage = (HBITMAP)::LoadImage (AfxGetInstanceHandle(), "c:\\TEMP.bmp", IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE |LR_CREATEDIBSECTION ); DeleteObject(hImage); These statement will increase the memory usage by 28 KB. Size of the "temp.bmp" file is 360KB. Could any one tell me why is it so? Regards Neha

[David Crow]

Neha wrote: These statement will increase the memory usage by 28 KB. How are you measuring this?

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Five birds are sitting on a fence. Three of them decide to fly off. How many are left?

[Alexander M]

this is not the answer to your question, but for loading a bitmap from the disk, you dont need to pass the hInst to the function! Don't try it, just do it! ;-)

[Neha]

Using window task manager mem usage for that application.

[Neha]

Still no difference.. One more strange thing is when some of function been called, It will increase the memory usage by 4KB.Those function don't allocate anything......

[Alexander M]

the value displayed in the task manager is not correct at all! Don't try it, just do it! ;-)

[Neha]

Is there any proof for that?

[David Crow]

The best you could hope to come from TM is to show the size of the address space that is in use, not the amount of that address space that your program is actually using. Perhaps you are confusing address space with program size.

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Five birds are sitting on a fence. Three of them decide to fly off. How many are left?

[David Crow]

Neha wrote: One more strange thing is when some of function been called, It will increase the memory usage by 4KB.Those function don't allocate anything...... How do you know? When you call a function that is not your own, are you sure of what it does, or doesn't do, behind the scene?

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Five birds are sitting on a fence. Three of them decide to fly off. How many are left?

[Neha]

I am talking about the Mem usage column in the processes tab. I think this represents the memory usage by the application.

[antlers]

If you execute that code 100 times does it increase the memory in task manager by 2800 K? If yes, then it is a memory leak. If no, it is just increasing the process address space one time to reflect the additional library code you used.

[Neha]

Yes,It increases by 2800K........

[melwyn]

Write a program that doesn't do anything main() { return 0; } Now see how much memory this takes in task mgr. According to you it shud take 0 bytes!!