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#2
xyzdwf2021-09-14 19:19
自己试了好多方式，也没找到好的解决办法，用上CachedBitmap也然并卵，除了多占了点内存，cpu占用依旧
 程序代码：//用上CachedBitmap void gui_gdiplus_paint(gui_gdiplus_context_p context, HWND hwnd, HDC hdc) { GpCachedBitmap* cache; GpBitmap* bitmap; GpGraphics* hdcgraphic; GdipCreateFromHDC(hdc, &hdcgraphic); GdipCreateBitmapFromGraphics(context->ctx->width, context->ctx->height, hdcgraphic, &bitmap); GdipGetImageGraphicsContext(bitmap, &context->graphics); gui_context_draw(context->ctx); GdipCreateCachedBitmap(bitmap, hdcgraphic, &cache); GdipDrawCachedBitmap(hdcgraphic, cache, 0, 0); GdipDeleteCachedBitmap(cache); GdipDeleteGraphics(context->graphics); GdipDisposeImage(bitmap); GdipDeleteGraphics(hdcgraphic); } 只有本站会员才能查看附件，请 登录 还是直接绘制， 不用双缓冲占用cpu很低，但是滚动的时候能闪瞎眼睛  程序代码：//不用缓冲直接绘制 void gui_gdiplus_paint(gui_gdiplus_context_p context, HWND hwnd, HDC hdc) { GdipCreateFromHDC(hdc, &context->graphics); gui_context_draw(context->ctx); GdipDeleteGraphics(context->graphics); } 只有本站会员才能查看附件，请 登录 以下是打的32位exe 只有本站会员才能查看附件，请 登录 [此贴子已经被作者于2021-9-14 19:28编辑过] |
下面是我绘制的代码，是网络上找的双缓冲绘制，自己的图形绘制是在gui_context_draw中进行，论坛里的高手帮我看看有没有问题
程序代码：void gui_gdiplus_paint(gui_gdiplus_context_p context, HWND hwnd, HDC hdc)
{
RECT rect;
GpBitmap* bitmap;
GpGraphics* hdcgraphic;
GetClientRect (hwnd, &rect);
GdipCreateFromHDC(context->hdc, &hdcgraphic);
GdipCreateBitmapFromGraphics(rect.right, rect.bottom, hdcgraphic, &bitmap);
GdipGetImageGraphicsContext(bitmap, &context->graphics);
// GdipSetTextRenderingHint(context->graphics, 3);
// GdipSetSmoothingMode(context->graphics, SmoothingModeAntiAlias);
gui_context_draw(context->ctx);
GdipDrawImageI(hdcgraphic, bitmap, 0, 0);
GdipDisposeImage(bitmap);
GdipDeleteGraphics(hdcgraphic);
GdipDeleteGraphics(context->graphics);
}
以下是打的32位exe，不知道能不能在64为系统下运行
只有本站会员才能查看附件，请 登录