Printer()

Hi.

#include <Printers.hpp>
TPrinter *Prntr = Printer();

Sagt in BCB5 "Aufruf einer Nicht-Funktion"

akari

Hallo

kann ich mit meinem Builder 5 nicht bestätigen.
Erstell ein neues Projekt, und füge nur die beiden zeilen ein, es wird laufen.

Eventuell hast du bereits eine Variable namens Printer erstellt, die die globale Funktion überdeckt?

bis bald
akari

Argh, nen Button hiess Printer. Super -.-
Danke für deine Hilfe!

Aber dann habe ich jetzt wo das klappt eine neue. Ich habe vor laaaaaanger Zeit mal mir irgendwo diesen Quellcode kopiert. Ich glaube sogar aus diesem Forum.

Er sagt mir jetzt aber in Zeile
pal = static_cast(**->HIER<-**malloc (sizeof (LOGPALETTE) + (sizeof (PALETTEENTRY) * 256)));

BITMAPINFO* bmp_info = static_cast(->HIER<-::GlobalLock (h_bmp_info));

pal = static_cast(**->HIER<-**malloc (sizeof (LOGPALETTE) + (sizeof (PALETTEENTRY) * 256)));

Fehler: E2274 < erwartet

Weiss wer warum?

TPrinter *p = Printer();

    // create a memory dc for the image
    HDC h_dc = image->Picture->Bitmap->Canvas->Handle;
    int bmp_w = image->Picture->Bitmap->Width,
    bmp_h = image->Picture->Bitmap->Height;
    HDC h_mem_dc = ::CreateCompatibleDC (h_dc);
    HBITMAP h_mem_bmp = ::CreateCompatibleBitmap (h_dc, bmp_w, bmp_h);
    HBITMAP h_old_bmp = ::SelectObject (h_mem_dc, h_mem_bmp);

    // fix up bad video drivers
    bool is_pal_dev = false;
    LOGPALETTE *pal;
    HPALETTE h_pal, h_old_pal;

    if (::GetDeviceCaps (image->Canvas->Handle, RASTERCAPS) & RC_PALETTE)
    {
        pal = static_cast(malloc (sizeof (LOGPALETTE) + (sizeof (PALETTEENTRY) * 256)));
        memset (pal, 0, sizeof (LOGPALETTE) + (sizeof (PALETTEENTRY) * 256));
        pal->palVersion = 0x300;
        pal->palNumEntries = ::GetSystemPaletteEntries(image->Canvas->Handle, 0, 256, pal->palPalEntry);
        if (pal->palNumEntries != 0)
        {
            h_pal = ::CreatePalette (pal);
            h_old_pal = ::SelectPalette (h_mem_dc, h_pal, false);
            is_pal_dev = true;
        }
        else
        {
            free (pal);
        }
    }

    // copy the image on to the memory dc
    ::BitBlt (h_mem_dc, 0, 0, bmp_w, bmp_h, h_dc, 0, 0, SRCCOPY);

    if (is_pal_dev)
    {
        ::SelectPalette (h_mem_dc, h_old_pal, false);
        ::DeleteObject (h_pal);
    }

    // delete the mem dc
    ::SelectObject (h_mem_dc, h_old_bmp);
    ::DeleteDC (h_mem_dc);

    // get memory for a BITMAPIFO Structure
    HANDLE h_bmp_info = ::GlobalAlloc (GHND, sizeof (BITMAPINFO) + (sizeof (RGBQUAD) * 256));
    BITMAPINFO* bmp_info = static_cast(::GlobalLock (h_bmp_info));
    //Set up the structure
    memset (bmp_info, NULL, sizeof (BITMAPINFO) + (sizeof (RGBQUAD) * 255));
    bmp_info->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
    bmp_info->bmiHeader.biPlanes = 1;
    bmp_info->bmiHeader.biBitCount = 8;
    bmp_info->bmiHeader.biWidth = bmp_w;
    bmp_info->bmiHeader.biHeight = bmp_h;
    bmp_info->bmiHeader.biCompression = BI_RGB;

    // find out how much memory for the bits
    ::GetDIBits (h_dc, h_mem_bmp, 0, bmp_h, NULL, bmp_info, DIB_RGB_COLORS);

    // Allocate memory for the bits
    HANDLE h_bits = GlobalAlloc (GHND, bmp_info->bmiHeader.biSizeImage);
    void *bits = ::GlobalLock (h_bits);

    // this time get the bits
    ::GetDIBits (h_dc, h_mem_bmp, 0, bmp_h, bits, bmp_info, DIB_RGB_COLORS);

    // fix up for bad video driver
    if (is_pal_dev)
    {
        for (int i = 0; i < pal->palNumEntries; i++)
        {
            bmp_info->bmiColors[i].rgbRed = pal->palPalEntry[i].peRed;
            bmp_info->bmiColors[i].rgbGreen = pal->palPalEntry[i].peGreen;
            bmp_info->bmiColors[i].rgbBlue = pal->palPalEntry[i].peBlue;
        }
        free (pal);
    }

    // begin the printing
    p->BeginDoc ();

    // scale print size
    int scale_x, scale_y;
    if (p->PageWidth < p->PageHeight)
    {
        scale_x = p->PageWidth;
        scale_y = image->Picture->Height * (p->PageWidth / bmp_w);
    }
    else
    {
        scale_x = image->Picture->Width * (p->PageHeight / bmp_h);
        scale_y = p->PageHeight;
    }

    // fix up for print with palette
    is_pal_dev = false;
    if (::GetDeviceCaps (h_dc, RASTERCAPS) & RC_PALETTE)
    {
        pal = static_cast(malloc (sizeof (LOGPALETTE) + (sizeof (PALETTEENTRY) * 256)));
        memset (pal, 0, sizeof (LOGPALETTE) + (sizeof (PALETTEENTRY) * 256));
        pal->palVersion = 0x300;
        pal->palNumEntries = 256;
        for (int i = 0; pal->palNumEntries; i++)
        {
            pal->palPalEntry[i].peRed = bmp_info->bmiColors[i].rgbRed;
            pal->palPalEntry[i].peGreen = bmp_info->bmiColors[i].rgbGreen;
            pal->palPalEntry[i].peBlue = bmp_info->bmiColors[i].rgbBlue;
        }
        h_pal = CreatePalette(pal);
        free (pal);
        h_old_pal = SelectPalette(p->Canvas->Handle, h_pal, false);
        is_pal_dev = true;
    }

    // send the bits to the printer
    StretchDIBits(p->Canvas->Handle, 0, 0, scale_x, scale_y,
		0, 0, bmp_w, bmp_h, bits,bmp_info, DIB_RGB_COLORS, SRCCOPY);

    // end the print
    p->EndDoc ();

    // clean up
    ::DeleteObject (h_mem_bmp);
    if (is_pal_dev)
    {
        ::SelectObject (p->Canvas->Handle, h_old_pal);
        ::DeleteObject (h_pal);
    }
    ::GlobalUnlock (bits);
    ::GlobalFree (h_bits);
    ::GlobalUnlock (bmp_info);
    ::GlobalFree (h_bmp_info);

akari

Hallo

static_cast ist ein Template, du must den Zieltyp in die geforderten Klammern noch angeben

BITMAPINFO* bmp_info = static_cast<BITMAPINFO*>(::GlobalLock (h_bmp_info));

Du solltest dir besser noch erstmal die Grundlagen des C++ Standard anschauen.

bis bald
akari

Danke für die Hilfe, habe natürlich den Ratschlag umgehend befolgt und mich eingelesen. Danke!

http://tutorial.schornboeck.net/casts.htm
http://tutorial.schornboeck.net/dynamic_cast.htm
http://tutorial.schornboeck.net/reinterpret_cast.htm