Declarations

procedure Draw(DstX, DstY: Integer; Src: TCustomBitmap32); overload;
procedure Draw(DstX, DstY: Integer; const SrcRect: TRect; Src: TCustomBitmap32); overload;
procedure Draw(const DstRect, SrcRect: TRect; Src: TCustomBitmap32); overload;
procedure Draw(const DstRect, SrcRect: TRect; hSrc: HDC); overload;

Overload Details

Overload 1

procedure Draw(DstX, DstY: Integer; Src: TCustomBitmap32); overload;

Draws the entire source bitmap at top-left pixel position (DstX, DstY).

Parameter	Type	Description
DstX, DstY	Integer	Top-left destination coordinate on this bitmap.
Src	TCustomBitmap32	Source bitmap to draw.

Overload 2

procedure Draw(DstX, DstY: Integer; const SrcRect: TRect; Src: TCustomBitmap32); overload;

Draws a sub-rectangle from the source bitmap at top-left pixel position (DstX, DstY).

Parameter	Type	Description
DstX, DstY	Integer	Top-left destination coordinate on this bitmap.
SrcRect	TRect	Source sub-rectangle on the source bitmap.
Src	TCustomBitmap32	Source bitmap to copy or blend pixels from.

Overload 3

procedure Draw(const DstRect, SrcRect: TRect; Src: TCustomBitmap32); overload;

Stretches and blends a sub-rectangle from the source bitmap into a destination rectangle.

Parameter	Type	Description
DstRect	TRect	Target destination rectangle on this bitmap.
SrcRect	TRect	Source sub-rectangle on the source bitmap.
Src	TCustomBitmap32	Source bitmap to copy or blend pixels from.

Overload 4

procedure Draw(const DstRect, SrcRect: TRect; hSrc: HDC); overload;

Copies a sub-rectangle from an external GDI device context (HDC) into a destination rectangle on this bitmap.

Parameter	Type	Description
DstRect	TRect	Destination rectangle on this bitmap.
SrcRect	TRect	Source rectangle in the external GDI device context.
hSrc	HDC	Handle to the source GDI device context.

Description

Draw blits pixel data onto this bitmap. In addition to standard bitmap-to-bitmap blitting, TBitmap32 provides an overload to copy pixels directly from an external GDI device context handle (hSrc).

Example

// Copy screen area directly from Windows desktop DC
Bitmap.Draw(Bitmap.BoundsRect, Rect(0, 0, 100, 100), GetDC(0));