怎样在自画菜单中绘制渐变的颜色

[woodwmh]

怎样在自画菜单中绘制渐变的颜色

[woodwmh]

高分求救！！快来抢

[2ndboy]

好象有个API，记不清了，查查再回复

[Flysnow]

void CMenu::DrawGradRect(CDC *pDC, CRect rect, COLORREF cr1,
COLORREF cr2, BOOL bHor)
{
int r1 = GetRValue(cr1);
int g1 = GetGValue(cr1);
int b1 = GetBValue(cr1);

int r2 = GetRValue(cr2);
int g2 = GetGValue(cr2);
int b2 = GetBValue(cr2);

if(bHor)
{
float dr = ((float)(r2 - r1))/(float)(rect.Width());
float dg = ((float)(g2 - g1))/(float)(rect.Width());
float db = ((float)(b2 - b1))/(float)(rect.Width());

for(int i = rect.left; i < rect.right; i ++)
{
int r = r1 + (int)(dr*((float)(i - rect.left)));
int g = g1 + (int)(dg*((float)(i - rect.left)));
int b = b1 + (int)(db*((float)(i - rect.left)));
CPen pen(PS_SOLID, 1, RGB(r, g, b));
CPen *old = pDC->SelectObject(&pen);
pDC->MoveTo(i, rect.top);
pDC->LineTo(i, rect.bottom);
pDC->SelectObject(old);
}
}
else
{
float dr = ((float)(r2 - r1))/(float)(rect.Height());
float dg = ((float)(g2 - g1))/(float)(rect.Height());
float db = ((float)(b2 - b1))/(float)(rect.Height());

for(int i = rect.top; i < rect.bottom; i ++)
{
int r = r1 + (int)(dr*((float)(i - rect.top)));
int g = g1 + (int)(dg*((float)(i - rect.top)));
int b = b1 + (int)(db*((float)(i - rect.top)));
CPen pen(PS_SOLID, 1, RGB(r, g, b));
CPen *old = pDC->SelectObject(&pen);
pDC->MoveTo(rect.left, i);
pDC->LineTo(rect.right, i);
pDC->SelectObject(old);
}
}
}

[woodwmh]

我要鼠标放到某个条目时，这条目变成渐变色，要怎样做？？
谢谢

[lanzhengpeng2]

使用新的Paltform SDK吧，里面有这样的类，称为GDI+的东西

[Flysnow]

我给的这个函数就是画背景的哦DrawGradRect

自己响应消息就可以了