39 lines
1.0 KiB
C++
39 lines
1.0 KiB
C++
// DlgIndicator.cpp: 实现文件
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//
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#include "mem_dc.h""
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/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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//
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/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// compatible_dc
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compatible_dc::compatible_dc(HDC src) : src_(src), old_(NULL)
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{
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HWND hwnd = WindowFromDC(src);
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RECT r = { 0 };
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if (!IsWindow(hwnd))
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hwnd = GetDesktopWindow();
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GetWindowRect(hwnd, &r);
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size_.cx = r.right - r.left;
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size_.cy = r.bottom - r.top;
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bmp_ = CreateCompatibleBitmap(src, size_.cx, size_.cy);
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hdc_ = CreateCompatibleDC(src);
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old_ = (HBITMAP)SelectObject(hdc_, bmp_);
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BitBlt(hdc_, 0, 0, size_.cx, size_.cy, src, 0, 0, SRCCOPY);
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}
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compatible_dc::~compatible_dc()
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{
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BitBlt(src_, 0, 0, size_.cx, size_.cy, hdc_, 0, 0, SRCCOPY);
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SelectObject(hdc_, old_);
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DeleteObject(bmp_);
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DeleteDC(hdc_);
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}
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HDC compatible_dc::get_dc()
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{
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return hdc_;
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} |