Как разместить картинку в клиентской области чужого окна?

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Невидимка (2005-05-25 16:33) [0]

т.е. на "сером" фоне например MS Word, когда не открыт ни один документ

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Marser © (2005-05-25 16:34) [1]

GetWindowDC

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kat © (2005-05-25 23:07) [2]

The BitBlt function performs a bit-block transfer of the color data corresponding to a rectangle of pixels from the specified source device context into a destination device context.

BOOL BitBlt(

HDC hdcDest, // handle to destination device context
int nXDest, // x-coordinate of destination rectangle"s upper-left corner
int nYDest, // y-coordinate of destination rectangle"s upper-left corner
int nWidth, // width of destination rectangle
int nHeight, // height of destination rectangle
HDC hdcSrc, // handle to source device context
int nXSrc, // x-coordinate of source rectangle"s upper-left corner
int nYSrc, // y-coordinate of source rectangle"s upper-left corner
DWORD dwRop // raster operation code
);

Parameters

hdcDest

Identifies the destination device context.

nXDest

Specifies the logical x-coordinate of the upper-left corner of the destination rectangle.

nYDest

Specifies the logical y-coordinate of the upper-left corner of the destination rectangle.

nWidth

Specifies the logical width of the source and destination rectangles.

nHeight

Specifies the logical height of the source and the destination rectangles.

hdcSrc

Identifies the source device context.

nXSrc

Specifies the logical x-coordinate of the upper-left corner of the source rectangle.

nYSrc

Specifies the logical y-coordinate of the upper-left corner of the source rectangle.

dwRop

Specifies a raster-operation code. These codes define how the color data for the source rectangle is to be combined with the color data for the destination rectangle to achieve the final color.
The following list shows some common raster operation codes:

Value Description
BLACKNESS Fills the destination rectangle using the color associated with index 0 in the physical palette. (This color is black for the default physical palette.)
DSTINVERT Inverts the destination rectangle.
MERGECOPY Merges the colors of the source rectangle with the specified pattern by using the Boolean AND operator.
MERGEPAINT Merges the colors of the inverted source rectangle with the colors of the destination rectangle by using the Boolean OR operator.
NOTSRCCOPY Copies the inverted source rectangle to the destination.
NOTSRCERASE Combines the colors of the source and destination rectangles by using the Boolean OR operator and then inverts the resultant color.
PATCOPY Copies the specified pattern into the destination bitmap.
PATINVERT Combines the colors of the specified pattern with the colors of the destination rectangle by using the Boolean XOR operator.
PATPAINT Combines the colors of the pattern with the colors of the inverted source rectangle by using the Boolean OR operator. The result of this operation is combined with the colors of the destination rectangle by using the Boolean OR operator.
SRCAND Combines the colors of the source and destination rectangles by using the Boolean AND operator.
SRCCOPY Copies the source rectangle directly to the destination rectangle.
SRCERASE Combines the inverted colors of the destination rectangle with the colors of the source rectangle by using the Boolean AND operator.
SRCINVERT Combines the colors of the source and destination rectangles by using the Boolean XOR operator.
SRCPAINT Combines the colors of the source and destination rectangles by using the Boolean OR operator.
WHITENESS Fills the destination rectangle using the color associated with index 1 in the physical palette. (This color is white for the default physical palette.)

Return Values

If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error information, call GetLastError
.

Remarks

If a rotation or shear transformation is in effect in the source device context, BitBlt returns an error. If other transformations exist in the source device context (and a matching transformation is not in effect in the destination device context), the rectangle in the destination device context is stretched, compressed, or rotated as necessary.
If the color formats of the source and destination device contexts do not match, the BitBlt function converts the source color format to match the destination format.

When an enhanced metafile is being recorded, an error occurs if the source device context identifies an enhanced-metafile device context.
Not all devices support the BitBlt function. For more information, see the RC_BITBLT raster capability entry in GetDeviceCaps.
BitBlt returns an error if the source and destination device contexts represent different devices.

See Also

GetDeviceCaps, MaskBlt, PlgBlt, StretchBlt

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Невидимка (2005-05-27 13:37) [3]

Насколько я знаю, GetWindowDC получает хэндл НЕклиентской части окна (типа строки меню, заголовка, скролбара)! Нужно как раз без этого всего:)
Плз, дайте лучше маленький кусочек кода (sdk знаем, но разбираться с проблемой лучше всё-таки на примерах).
А я вам спасибо скажу, потому что мне моя идея нравится - могу подарить:)

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Marser © (2005-05-29 01:07) [4]

> GetWindowDC получает хэндл НЕклиентской части окна
> (типа строки меню, заголовка, скролбара)! Нужно как
> раз без этого всего:)

Пробелы в теории.
The GetWindowDC function retrieves the device context (DC) for the entire window, including title bar, menus, and scroll bars. A window device context permits painting anywhere in a window, because the origin of the device context is the upper-left corner of the window instead of the client area.

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vidiv © (2005-05-29 11:00) [5]

> Невидимка (27.05.05 13:37) [3]

используй getDC... разница GetDC и GetWindowDC как раз в том что подчеркнул Marser

Marser © (29.05.05 01:07) [4]

Читаем вопрос:

> Как разместить картинку в клиентской области чужого окна

Чешем репу и думаем, а нафиг нам GetWindowDC в этом случае ? Мы же замучаемся искать, где у него клиентская область, у этого чужого окна.

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Невидимка (2005-05-30 18:40) [7]

2Игорь Шевченко
Во-во, ВСЁ окно действительно не лечит!
За GetDC спасибо!
А код я наверно сам вам напишу:)

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