Draws a rectangle into the target device context, and then fills the rectangle with the specified pattern and color.
#include "l_bitmap.h"
L_LTEFX_API L_INT L_EfxPatternFillRect(hDC, pRect, uStyle, crBack, crFore)
Handle to the target device context.
Pointer to the display destination rectangle.
Filling style. The following are possible values. (Values cannot be combined.)
Value | Meaning |
---|---|
EFX_PATTERN_SOLID | Solid ◼ |
EFX_PATTERN_HORZ_LINE | Horizontal lines ▤ |
EFX_PATTERN_VERT_LINE | Vertical lines ▥ |
EFX_PATTERN_DOWNWARD_DIAG | Downward diagonal lines ▨ |
EFX_PATTERN_UPWARD_DIAG | Upward diagonal lines ▧ |
EFX_PATTERN_CROSS | Cross line ▦ |
EFX_PATTERN_DIAG_CROSS | Diagonal cross lines ▩ |
EFX_PATTERN_MAX | Diagonal cross lines ▩ |
COLORREF value that specifies the background color.
COLORREF value that specifies the foreground color.
Value | Meaning |
---|---|
SUCCESS | The function was successful. |
< 1 | An error occurred. Refer to Return Codes. |
For general information, refer to Implementing Special Effects.
Win32, x64.
This example shows the minimum requirements for using the L_EfxPatternFillRect function to draw and fill a rectangle with a pattern and color.
L_INT EfxPatternFillRectExample(HWND hWnd, RECT * pDest)
{
L_INT nRet;
HDC hdc; // Device context for the current window
HPALETTE hSavedPalette = NULL; // Temporary copy of the current system palette
HPALETTE hOurPalette = NULL; // The palette that we will use to paint
L_INT nBitsPerPixel;
// Get the device context
hdc = GetDC(hWnd);
// Check the device to see if we need a palette
nBitsPerPixel = GetDeviceCaps(hdc, BITSPIXEL) * GetDeviceCaps(hdc, PLANES);
if (nBitsPerPixel <= 8)
{
hOurPalette = (HPALETTE)GetStockObject(DEFAULT_PALETTE);
hSavedPalette = SelectPalette(hdc, hOurPalette, FALSE);
// Realize our palette
RealizePalette(hdc);
}
// Draw the pattern filled rectangle
nRet = L_EfxPatternFillRect(hdc, // device context
pDest, // destination rectangle
EFX_PATTERN_DIAG_CROSS, // diagonal cross pattern
RGB(0, 0, 0), // background color, black
RGB(0, 0, 255)); // foreground color, blue
if (nRet != SUCCESS)
return nRet;
// Restore the old palette
if (hOurPalette)
SelectPalette(hdc, hSavedPalette, FALSE);
// Release the device context
ReleaseDC(hWnd, hdc);
return SUCCESS;
}
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