用C ++绘制图像 [英] Drawing an image in C++

问题描述

此代码有任何问题吗？当我绘制多个图像时，它们似乎已被破坏，几乎就像图像被另一个图像覆盖一样......





< pre lang =c ++> CImage myImage;
myImage.Load（my_symbol-> outfile）;


int vWidth = myImage.GetWidth（）;
int vHeight = myImage.GetHeight（）;


CRect m_ShowDRect;
m_ShowDRect = CRect（vLeft，vTop，vWdith，vHeight）;

myImage.Draw（pDC-> m_hDC，CRect（& m_ShowDRect））;
int old = pDC-> SetROP2（R2_NOTXORPEN）;
pDC-> Rectangle（m_ShowDRect）;
pDC-> SetROP2（旧）;
myImage.Destroy（）;

解决方案

可能是

CRect（vLeft，vTop， vLeft + vWdith，vTop + vHeight）;

Any issues with this code? when I draw multiple images, they seem to get corrupted, almost as if the image is overwritten by another image...

CImage myImage;
	 myImage.Load(my_symbol->outfile);


	 int vWidth = myImage.GetWidth();
	 int vHeight = myImage.GetHeight();


	 CRect m_ShowDRect;
	 m_ShowDRect = CRect(vLeft, vTop, vWdith, vHeight);
	
	 myImage.Draw(pDC->m_hDC, CRect(&m_ShowDRect));
	 int old = pDC->SetROP2(R2_NOTXORPEN);
	 pDC->Rectangle(m_ShowDRect);
	 pDC->SetROP2(old);
	 myImage.Destroy();

解决方案

may be
CRect(vLeft, vTop, vLeft+vWdith, vTop+vHeight);

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