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PODisplaying image in WIN32, Why its not displayed?
 

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  1. PODisplaying image in WIN32, Why its not displayed?
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    <p>I want to load a BitMap image in a pic box I created inside a window...picBoxDisp is created using following mechanism..</p> <pre><code>picBoxDisp = CreateWindow("STATIC", "image box", WS_VISIBLE |WS_CHILD | SS_BITMAP |WS_TABSTOP | WS_BORDER, 50, 50, 250, 300, hwnd , (HMENU)10000, NULL, NULL); </code></pre> <p>Now Next I created a hBitmap object and loaded an image in to it...</p> <pre><code>hBitmap = (HBITMAP) LoadImage(NULL,szFileName,IMAGE_BITMAP,0,0, LR_LOADFROMFILE| LR_DEFAULTSIZE); SendMessage(picBoxDisp,STM_SETIMAGE,(WPARAM) IMAGE_BITMAP,(LPARAM) NULL); //now assign the new image //Create a compatible DC for the original size bitmap, for example originalMemDc. HDC originalDC = GetDC((HWND)hBitmap); HDC originalMemDC = CreateCompatibleDC(originalDC); if(originalMemDC==NULL){ MessageBox(NULL,"Problem while creating DC.","Error",MB_OK); } //Select hBitmap into originalMemDc. SelectObject(originalMemDC,hBitmap); //Create a compatible DC for the resized bitmap, for example resizedMemDc. HDC picBoxDC = GetDC(picBoxDisp); HDC resizedMemDC = CreateCompatibleDC(picBoxDC); //Create a compatible bitmap of the wanted size for the resized bitmap, HBITMAP hResizedBitmap = CreateCompatibleBitmap(picBoxDC,250,300); //Select hResizedBitmap into resizedMemDc. SelectObject(resizedMemDC,hResizedBitmap); //Stretch-blit from originalMemDc to resizedMemDc. //BitBlt(resizedMemDC,0,0,250,300,originalMemDC,0,0,SRCCOPY); BITMAP bmp_old,bmp_new; GetObject(hBitmap,sizeof(bmp_old),&amp;bmp_old); GetObject(hResizedBitmap,sizeof(bmp_new),&amp;bmp_new); StretchBlt ( resizedMemDC,0,0,bmp_new.bmWidth,bmp_new.bmHeight, originalMemDC,0,0,bmp_old.bmWidth,bmp_new.bmHeight, SRCCOPY); ////De-select the bitmaps. if((resizedMemDC==NULL)||(hResizedBitmap == NULL)) { MessageBox(NULL,"Something is NULL","Error",MB_OK); } else //Set hResizedBitmap as the label image with STM_SETIMAGE SendMessage(picBoxDisp,STM_SETIMAGE, (WPARAM) IMAGE_BITMAP,(LPARAM) hResizedBitmap); </code></pre> <p><strong>I just cant understand, why the above code is not working ?</strong></p> <p>Thanks in advance, </p>
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