Bitmap.ApplyEffect(Effect*, RECT*) method
Applies to: desktop apps only
The Bitmap::ApplyEffect method alters this Bitmap object by applying a specified effect.
Syntax
Status ApplyEffect(
[in] Effect *effect,
[in] RECT *ROI
);
Parameters
effect [in]
Type: Effect*Pointer to an instance of a descendant of the Effect class. The descendant (for example, a Blur object) specifies the effect that is applied.
ROI [in]
Type: RECT*Pointer to a RECT structure that specifies the portion of the input bitmap to which the effect is applied. Pass NULL to specify that the effect applies to the entire input bitmap.
Return value
Type:
Type: Status****
If the method succeeds, it returns Ok, which is an element of the Status enumeration.
If the method fails, it returns one of the other elements of the Status enumeration.
Examples
The following example draws an image twice: once with no change, and once after the brightness has been increased for part of the image.
VOID Example_BrightnessContrastApplyEffect1(HDC hdc)
{
Graphics graphics(hdc);
Bitmap myBitmap(L"Picture.bmp");
UINT srcWidth = myBitmap.GetWidth();
UINT srcHeight = myBitmap.GetHeight();
BrightnessContrastParams briConParams;
briConParams.brightnessLevel = 50;
briConParams.contrastLevel = 0;
BrightnessContrast briCon;
briCon.SetParameters(&briConParams);
RECT rectOfInterest = {20, 15, 80, 50};
// Draw the original image.
graphics.DrawImage(&myBitmap, 20, 20, srcWidth, srcHeight);
// Increase the brightness in a portion of the image.
myBitmap.ApplyEffect(&briCon, &rectOfInterest);
// Draw the image again.
graphics.DrawImage(&myBitmap, 200, 20, srcWidth, srcHeight);
}
Requirements
Minimum supported client |
Windows Vista |
Minimum supported server |
Windows Server 2008 |
Product |
GDI+ 1.1 |
Header |
Gdiplusheaders.h (include Gdiplus.h) |
Library |
Gdiplus.lib |
DLL |
Gdiplus.dll |
See also
Send comments about this topic to Microsoft
Build date: 3/6/2012