Thread: issues

i tried running this program and got an error. the code is copy/pasted from a cd included with the book i'm learning from so i don't understand the error. can anyone help.

here is a screen of what i see....
http://www.uploadfile.info/uploads/7a977368d1.jpg

why are you casting to void* ?

oh alright then here you go, this is the function i am having issues with...

Code:

void DrawBitmap(HDC hdcDest, char *filename, int x, int y)
{
     HBITMAP image;
     BITMAP bm;
     HDC hdcMem;
     
     //load the bitmap image
     image = (void*)LoadImage(0,"c.bmp",IMAGE_BITMAP,0,0,LR_LOADFROMFILE);
     
     //read the bitmap's properties
     GetObject(image, sizeof(BITMAP), &bm);
     
     //create a device context for the bitmap
     hdcMem = CreateCompatibleDC(global_hdc);
     SelectObject(hdcMem, image);
     
     //draw the bitmap to the window (bit block transfer)
     BitBlt(
            global_hdc,               //destination device context
            x, y,                     //x, y location on destination
            bm.bmWidth, bm.bmHeight,  //width, height of source bitmap
            hdcMem,                   //soource bitmap device context
            0, 0,                     //start x,y on source bitmap
            SRCCOPY);                 //blit method
            
     //delete the device context and bitmap
     DeleteDC(hdcMem);
     DeleteObject((HBITMAP)image);
}

i posted the screen so that you could see what error i'm getting and all that stuff.

but for those who don't like to click the error i get is

In function 'void DrawBitmap(HDC__*, char*, int, int)'
invalid conversion from 'void*' to 'HBITMAP__*'
[Build Error] [winmain.o] Error 1

thanks for any help.

EDIT: just saw the next post. i don't know why, i copied this code from a cd included with the book i'm learning out of. but removing the (void*) casting still produces the same error.

no didn't but i can't ask a book and expect and answer when it is sure it is right.

EDIT: just saw the next post. i don't know why, i copied this code from a cd included with the book i'm learning out of. but removing the (void*) casting still produces the same error.

this may sound a little crazy, but you could always try to edit the code.

you know like remove the cast to void* and see what happens.

wow you guys don't read much....
i said in first post i copied it from a book
and you quoted me yourself when i said that removing the cast still produces the same error...

anyway thanks for the responses, any other ideas?

...why not cast it to a HBITMAP?

Originally Posted by Logan1033

wow you guys don't read much....
i said in first post i copied it from a book
and you quoted me yourself when i said that removing the cast still produces the same error...

anyway thanks for the responses, any other ideas?

hehe that is funny. i dont have much of a defense for that one..

ok i tried and it actually compiled and ran this time but it didn't produce the output desired.
oh well, thank you for answering my question, i'll go figure out what the other problem is now.

You still haven't told us what book you're using.

> Ahh code from a book... check for the books site to see if there is any updated code... perhaps it is made for a older compiler.
This is some good advice: most C books worth anything have an errata list on the author's website. If you don't know the url, you can google the author's name and see what you find.