Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

how to draw an image (begginer)

Posted on 2003-10-31
5
484 Views
Last Modified: 2012-08-13
Hi, I am a begginer in C++ and I want to draw an image in my form. I mean, I want to have a bitmap in the form's background. I am not using MFC, it's just a win32 application. What I've done so far is this:

In my project.rc file I just wrote this:

BALLBMP BITMAP "15.bmp"

In my project.cpp this is the code:

HBITMAP hbmBall;

hbmBall = LoadBitmap(hInstance, "BALLBMP");
if(!hbmBall){
   char uo[256];
itoa(GetLastError(),uo,10);MessageBox(NULL,"no se cargo el icono",uo,MB_OK);}


When I run the program, I get an error number 1814 (The specified resource name cannot be found in the image file).
What am I doing wrong?
Thank you
0
Comment
Question by:vittoriodelamancia
  • 2
  • 2
5 Comments
 
LVL 16

Expert Comment

by:George Tokas
ID: 9658805
>>BALLBMP BITMAP "15.bmp"
This is not needed.
>>hbmBall = LoadBitmap(hInstance, "BALLBMP");
change to:
hbmBall = LoadBitmap(hInstance, "15.bmp");
15.bmp or yourfilename.bmp must be in the same directory or you have to specify the path.
I think that way it will work.
gtokas.
0
 

Author Comment

by:vittoriodelamancia
ID: 9659294
hi gtokas! No, it doesn't work. I had tried that before, but it doesn't work. I get the same 1814 error code.
I am using Microsoft Visual C++, and I it is a Win32 application. I don't know why it doesn't work!
0
 
LVL 48

Accepted Solution

by:
AlexFM earned 200 total points
ID: 9660524
Don't edit .rc file directly. Open Resource view, right-click Resources and select "Add resource". Select Bitmap, import. Select 15.bmp, it will be added to resource with default resource ID like IDB_BITMAP (you can change this ID). To load such bitmap in the program write:

HBITMAP hbmBall;

hbmBall = (HBITMAP)LoadImage(hInstance, MAKEINTRESOURCE(IDB_BITMAP), IMAGE_BITMAP, 0, 0, LR_CREATEDIBSECTION);
0
 

Author Comment

by:vittoriodelamancia
ID: 9661486
Excellent!! And now to paint the form?
0
 
LVL 48

Expert Comment

by:AlexFM
ID: 9662420
           case WM_PAINT:
                {
                    hdc = BeginPaint(hWnd, &ps);
                   
                    HBITMAP hbmBall;
                    hbmBall = (HBITMAP)LoadImage(hInst, MAKEINTRESOURCE(IDB_BITMAP), IMAGE_BITMAP, 0, 0, LR_CREATEDIBSECTION);
                   
                    BITMAP bmp;
                    GetObject(hbmBall, sizeof(BITMAP), &bmp);
                   
                    HDC hmemDC = CreateCompatibleDC(hdc);
                    SelectObject(hmemDC, hbmBall);
                   
                    BitBlt(hdc, 0, 0, bmp.bmWidth, bmp.bmHeight, hmemDC, 0, 0, SRCCOPY);
                   
                    EndPaint(hWnd, &ps);

                    DeleteDC(hmemDC);
                    DeleteObject(hbmBall);
                }
                break;
0

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Many modern programming languages support the concept of a property -- a class member that combines characteristics of both a data member and a method.  These are sometimes called "smart fields" because you can add logic that is applied automaticall…
Container Orchestration platforms empower organizations to scale their apps at an exceptional rate. This is the reason numerous innovation-driven companies are moving apps to an appropriated datacenter wide platform that empowers them to scale at a …
The viewer will learn how to use the return statement in functions in C++. The video will also teach the user how to pass data to a function and have the function return data back for further processing.
The viewer will be introduced to the member functions push_back and pop_back of the vector class. The video will teach the difference between the two as well as how to use each one along with its functionality.

809 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question