정형모 wrote:

> 화면전체를 capture 해서 detktop에 연결되어있는

> 프린터로 출력을 하려고 하는데

> 아시는분 답변 부탁 드립니다.



제가 internet에서 찾아서 쓰고 있는데

자세한 내용은 저도 잘 모릅니다.





procedure TfrmHMCU010A.bbt_printClick(Sender: TObject);

var

dc: HDC;

isDcPalDevice : BOOL;

MemDc :hdc;

MemBitmap : hBitmap;

OldMemBitmap : hBitmap;

hDibHeader : Thandle;

pDibHeader : pointer;

hBits : Thandle;

pBits : pointer;

ScaleX : Double;

ScaleY : Double;

ppal : PLOGPALETTE;

pal : hPalette;

Oldpal : hPalette;

i : integer;

begin

Screen.Cursor := crHourGlass;

{Get the screen dc}

dc := GetDc(0);

{Create a compatible dc}

MemDc := CreateCompatibleDc(dc);

{create a bitmap}

MemBitmap := CreateCompatibleBitmap(Dc,

Application.MainForm.width,

Application.MainForm.height);

{select the bitmap into the dc}

OldMemBitmap := SelectObject(MemDc, MemBitmap);



{Lets prepare to try a fixup for broken video drivers}

isDcPalDevice := false;

if GetDeviceCaps(dc, RASTERCAPS) and

RC_PALETTE = RC_PALETTE then begin

GetMem(pPal, sizeof(TLOGPALETTE) +

(255 * sizeof(TPALETTEENTRY)));

FillChar(pPal^, sizeof(TLOGPALETTE) +

(255 * sizeof(TPALETTEENTRY)), #0);

pPal^.palVersion := $300;

pPal^.palNumEntries :=

GetSystemPaletteEntries(dc,

0,

256,

pPal^.palPalEntry);

if pPal^.PalNumEntries <> 0 then begin

pal := CreatePalette(pPal^);

oldPal := SelectPalette(MemDc, Pal, false);

isDcPalDevice := true

end else

FreeMem(pPal, sizeof(TLOGPALETTE) +

(255 * sizeof(TPALETTEENTRY)));

end;



{copy from the screen to the memdc/bitmap}

BitBlt(MemDc,

0, 0,

Application.MainForm.width, Application.MainForm.height,

Dc,

Application.MainForm.left, Application.MainForm.top,

SrcCopy);



if isDcPalDevice = true then begin

SelectPalette(MemDc, OldPal, false);

DeleteObject(Pal);

end;



{unselect the bitmap}

SelectObject(MemDc, OldMemBitmap);

{delete the memory dc}

DeleteDc(MemDc);

{Allocate memory for a DIB structure}

hDibHeader := GlobalAlloc(GHND,

sizeof(TBITMAPINFO) +

(sizeof(TRGBQUAD) * 256));

{get a pointer to the alloced memory}

pDibHeader := GlobalLock(hDibHeader);



{fill in the dib structure with info on the way we want the DIB}

FillChar(pDibHeader^,

sizeof(TBITMAPINFO) + (sizeof(TRGBQUAD) * 256),

#0);

PBITMAPINFOHEADER(pDibHeader)^.biSize :=

sizeof(TBITMAPINFOHEADER);

PBITMAPINFOHEADER(pDibHeader)^.biPlanes := 1;

PBITMAPINFOHEADER(pDibHeader)^.biBitCount := 8;

PBITMAPINFOHEADER(pDibHeader)^.biWidth := Application.MainForm.width;

PBITMAPINFOHEADER(pDibHeader)^.biHeight := Application.MainForm.height;

PBITMAPINFOHEADER(pDibHeader)^.biCompression := BI_RGB;



{find out how much memory for the bits}

GetDIBits(dc,

MemBitmap,

0,

Application.MainForm.height,

nil,

TBitmapInfo(pDibHeader^),

DIB_RGB_COLORS);



{Alloc memory for the bits}

hBits := GlobalAlloc(GHND,

PBitmapInfoHeader(pDibHeader)^.BiSizeImage);

{Get a pointer to the bits}

pBits := GlobalLock(hBits);



{Call fn again, but this time give us the bits!}

GetDIBits(dc,

MemBitmap,

0,

Application.MainForm.height,

pBits,

PBitmapInfo(pDibHeader)^,

DIB_RGB_COLORS);



{Lets try a fixup for broken video drivers}

if isDcPalDevice = true then begin

for i := 0 to (pPal^.PalNumEntries - 1) do begin

PBitmapInfo(pDibHeader)^.bmiColors[i].rgbRed :=

pPal^.palPalEntry[i].peRed;

PBitmapInfo(pDibHeader)^.bmiColors[i].rgbGreen :=

pPal^.palPalEntry[i].peGreen;

PBitmapInfo(pDibHeader)^.bmiColors[i].rgbBlue :=

pPal^.palPalEntry[i].peBlue;

end;

FreeMem(pPal, sizeof(TLOGPALETTE) +

(255 * sizeof(TPALETTEENTRY)));

end;



{Release the screen dc}

ReleaseDc(0, dc);

{Delete the bitmap}

DeleteObject(MemBitmap);



{Start print job}

Printer.BeginDoc;



{Scale print size}

if Printer.PageWidth < Printer.PageHeight then begin

ScaleX := Printer.PageWidth;

ScaleY := Application.MainForm.Height * (Printer.PageWidth / Application.MainForm.Width);

end else begin

ScaleX := Application.MainForm.Width * (Printer.PageHeight / Application.MainForm.Height);

ScaleY := Printer.PageHeight;

end;





{Just incase the printer drver is a palette device}

isDcPalDevice := false;

if GetDeviceCaps(Printer.Canvas.Handle, RASTERCAPS) and

RC_PALETTE = RC_PALETTE then begin

{Create palette from dib}

GetMem(pPal, sizeof(TLOGPALETTE) +

(255 * sizeof(TPALETTEENTRY)));

FillChar(pPal^, sizeof(TLOGPALETTE) +

(255 * sizeof(TPALETTEENTRY)), #0);

pPal^.palVersion := $300;

pPal^.palNumEntries := 256;

for i := 0 to (pPal^.PalNumEntries - 1) do begin

pPal^.palPalEntry[i].peRed :=

PBitmapInfo(pDibHeader)^.bmiColors[i].rgbRed;

pPal^.palPalEntry[i].peGreen :=

PBitmapInfo(pDibHeader)^.bmiColors[i].rgbGreen;

pPal^.palPalEntry[i].peBlue :=

PBitmapInfo(pDibHeader)^.bmiColors[i].rgbBlue;

end;

pal := CreatePalette(pPal^);

FreeMem(pPal, sizeof(TLOGPALETTE) +

(255 * sizeof(TPALETTEENTRY)));

oldPal := SelectPalette(Printer.Canvas.Handle, Pal, false);

isDcPalDevice := true

end;



{send the bits to the printer}

StretchDiBits(Printer.Canvas.Handle,

0, 0,

Round(scaleX), Round(scaleY),

0, 0,

Application.MainForm.Width, Application.MainForm.Height,

pBits,

PBitmapInfo(pDibHeader)^,

DIB_RGB_COLORS,

SRCCOPY);



{Just incase you printer drver is a palette device}

if isDcPalDevice = true then begin

SelectPalette(Printer.Canvas.Handle, oldPal, false);

DeleteObject(Pal);

end;





{Clean up allocated memory}

GlobalUnlock(hBits);

GlobalFree(hBits);

GlobalUnlock(hDibHeader);

GlobalFree(hDibHeader);





{End the print job}

Printer.EndDoc;

Screen.Cursor := crDefault;

end;