In this section:
The following routines transmit a handle to a device context and are particularly associated with the %gr (Graphics Region) and %dw (Owner Draw Graphics) formats described in (Graphics). GET_BITMAP_DC@ returns a handle for use with %dw whilst GET_CURRENT_DC@ returns a handle for a device context created by using %gr. These routines allow ClearWin+ to be used with Windows API functions and as such are unlikely to be of interest to a majority of ClearWin+ programmers.
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Ensures that the palette is set correctly for the current window. |
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Attaches a palette to a DC. |
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Changes the pen in a device context acquired through GET_BITMAP_DC@. |
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Clears a bitmap device context acquired by GET_BITMAP_DC@. |
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Creates a device context for use with %dw. |
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Gets the current graphical device context. |
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Releases a bitmap device context acquired by GET_BITMAP_DC@. |