#include "l_bitmap.h"
L_LTEFX_API L_INT L_EfxDrawRotated3dText(hDC, pszText, pRect, nAngle, uFlags, nXDepth, nYDepth, crText, crShadow, crHilite, hFont, hdcFore)
Draws three-dimensional text which is rotated by the amount specified into the target device context using the specified font, color, and style.
Handle to the target device context.
Text string.
Pointer to the display destination rectangle.
Text angle, in tenths of degrees.
Text style. Use this parameter to control the style and justification of the three-dimensional text. For valid values, refer to Effect Text Style Flags and Effect Text Alignment Flags.
Horizontal shadow position.
Vertical shadow position.
COLORREF value that specifies the text color.
COLORREF value that specifies the shadow color.
COLORREF value that specifies the border color.
Handle to the selected font. The font must be TrueType in order to rotate.
Handle to the source device context for the foreground. Use this parameter to place an image (such as a gradient) on the surface of the three-dimensional text. Use NULL to paint the color specified in crText
.
Value | Meaning |
---|---|
SUCCESS | The function was successful. |
< 1 | An error occurred. Refer to Return Codes. |
The font must be TrueType in order to rotate. The rotation point will be calculated from (X, 0).
Drop shadows are available only for the following uFlags
values:
The crShadow
color is used for three-dimensional effects for the following uFlags values:
The crHilite
color is used only for the following uFlags values:
For general information, refer to Implementing Special Effects.
Required DLLs and Libraries
Platforms
Windows 2000 / XP/Vista.
This example shows the minimum requirements for using L_EfxDrawRotated3dText.
L_INT EfxDrawRotated3dTextExample(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;
HFONT hFont; /* Font to use for the text, must be TrueType */
HDC hdcMem; /* HDC for foreground image */
HBITMAP hbmMem; /* Bitmap for foreground image */
RECT rcbm;
/* Get the device context */
hdc = GetDC (hWnd);
/* Create the gradient for the foreground of the 3D text */
rcbm.top = pDest->top;
rcbm.left = pDest->left;
rcbm.bottom = pDest->bottom;
rcbm.right = pDest->right;
OffsetRect(&rcbm, -pDest->left, -pDest->top);
hdcMem = CreateCompatibleDC(hdc);
hbmMem = CreateCompatibleBitmap(hdc, rcbm.right, rcbm.bottom);
hbmMem = (HBITMAP)SelectObject(hdcMem, hbmMem);
/* Place a gradient in the foreground of the 3D text */
nRet = L_EfxGradientFillRect(hdcMem,
&rcbm,
EFX_GRADIENT_LINE_L_TO_R,
RGB(255, 0, 0),
RGB(0, 0, 255),
16 );
if(nRet != SUCCESS)
return nRet;
/* Create the font */
hFont = CreateFont(-MulDiv(32, GetDeviceCaps(hdc, LOGPIXELSY), 72),
0, 0, 0,
FW_BOLD, FALSE, FALSE, FALSE,
DEFAULT_CHARSET, OUT_DEFAULT_PRECIS,
CLIP_DEFAULT_PRECIS,
DEFAULT_QUALITY,
DEFAULT_PITCH,
TEXT("Arial"));
/* 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 Rotated 3D text */
nRet = L_EfxDrawRotated3dText(hdc, /* device context */
TEXT("Rotated 3D Text - LEADTOOLS"),
pDest, /* destination rectangle */
300, /* rotate 30 degrees*/
/* style flags for 3D text */
EFX_TEXT_DROPSHADOW | EFX_TEXT_HCENTER | EFX_TEXT_VCENTER,
2, /* horizontal shadow position */
2, /* vertical shadow position */
RGB ( 0,0,255 ), /* text color, blue */
RGB ( 0,0,0 ), /* shadow color, black */
RGB ( 255,255,255 ), /* border color, white */
hFont,
hdcMem ); /* use this to put an image in the font */
if(nRet != SUCCESS)
return nRet;
/* Restore the old palette */
if ( hOurPalette )
SelectPalette (hdc, hSavedPalette, FALSE);
/* Release the device context */
ReleaseDC(hWnd, hdc);
DeleteObject (hFont);
DeleteObject(SelectObject(hdcMem, hbmMem));
DeleteDC(hdcMem);
return SUCCESS;
}
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