如何在CMFCHeaderCtrl中更改箭头的大小？ [英] How change size of arrows in CMFCHeaderCtrl?

问题描述

嗨！



我这个代码加载图标：

Hi!

I load icon by this code:

void Test::OnDrawSortArrow(CDC* pDC, CRect rectArrow)
{
    Metafile * emf = NULL;

    emf = LoadMetafile(IDR_ICON_EXPAND, NULL, true);
    Gdiplus::Bitmap* image = BitmapFromEmf(emf, 8, 8, Color(255,82,82,82), 0);

    HICON hIcon = NULL;

    if(IsAscending())
        image->RotateFlip(Rotate180FlipNone);

    image->GetHICON(&hIcon);

    pDC->DrawIcon(rectArrow.TopLeft().x - 20, rectArrow.TopLeft().y - 10, hIcon);

    delete emf;
}

我加载的图标应该是8x8但这个图标拉伸到更大尺寸的问题

如何将箭头大小设置为8？

The problem that icon that I loaded should be 8x8 but this icon stretching to more bigger size
How can I set size of arrows to 8?

推荐答案

这有什么用？ http://cboard.cprogramming.com/windows-programming/69137-listview- arrow-column-head.html [ ^ ]

This any use? http://cboard.cprogramming.com/windows-programming/69137-listview-arrow-column-head.html[^]

我找到了解决方案！

需要更改图像边距

I found solution!
Need to change margin of image

void Test::OnDrawSortArrow(CDC* pDC, CRect rectArrow)
{
    Metafile * emf = NULL;

    emf = LoadMetafile(IDR_ICON_EXPAND, NULL, true);
    Gdiplus::Bitmap* image = BitmapFromEmf(emf, 8, 8, Color(255,82,82,82), 0);

    HICON hIcon = NULL;

    pDC->DrawIcon(rectArrow.TopLeft().x - 20, rectArrow.TopLeft().y - 10, hIcon);

    delete emf;
}

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