[英]Display static image in wxWidgets?
It's been days for me trying to display a BMP image from memory in a wxWidgets dialog, but none of my tries succeed. 我试图在wxWidgets对话框中显示内存中的BMP图像已经好几天了,但我的尝试都没有成功。
First, I tried to create a wxStaticBitmap control in my dialog: 首先,我尝试在对话框中创建一个wxStaticBitmap控件:
// in class declaration inside header file
wxStaticBitmap *ibitmap;
// in wxDialog constructor
// MyLogo is an array of `unsigned char`
// contains the bitmap file (Yes, the bitmap file, with BMP header)
ibitmap = new wxStaticBitmap(mainPanel, 4000, wxBitmap(MyLogo, wxBITMAP_TYPE_BMP, 200, 62), wxPoint(10, 10), wxSize(200, 62));
I got no error, but the image didn't appear. 我没有错误,但图像没有出现。
Second, I tried to draw the image inside the EVT_PAINT of the dialog: 其次,我试图在对话框的EVT_PAINT中绘制图像:
// in the class declaration inside header file
wxBitmap *ibitmap;
// in the events declaration
EVT_PAINT(OnPaint)
// in wxDialog constructor
ibitmap = new wxBitmap(MyLogo, wxBITMAP_TYPE_BMP, 200, 62);
// event method implementation
void MyDialog::OnPaint(wxPaintEvent &event)
{
wxPaintDC dc(this);
dc.DrawBitmap(*ibitmap, 10, 10);
}
Now I got this debug alert: http://img266.imageshack.us/img266/9512/wxerror.jpg 现在我得到了这个调试警报: http : //img266.imageshack.us/img266/9512/wxerror.jpg
and the debugger stopped at this line: 并且调试器在此行停止:
// dc.h Ln 271
{ DoDrawBitmap(bmp, x, y, useMask); }
Anyone please point me out? 有人请指出我吗?
Your bitmap is not being loaded correctly. 您的位图未正确加载。 According to the wxWidgets docs the wxBitmap
constructor you're wanting to use has the following signature: 根据wxWidgets文档 ,您想要使用的wxBitmap
构造函数具有以下签名:
wxBitmap(const char bits[], int width, int height, int depth=1)
So you should end up with something like: 所以你应该得到类似的东西:
wxBitmap(MyLogo, 200, 62, 3)
Assuming an RGB bitmap. 假设一个RGB位图。
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