winapi - C++ Win32 Draw to a DC and Keeping It -

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i trying draw simple few rectangles , store result, need draw once. so, keeping hdc (hdcbackround) @ top "globaly."

void drawbackground(hwnd hwnd) { // hwnd main windows handle  // dimensions  rect rect;  getwindowrect(hwnd, &rect);    hdc hwindc = getdc(hwnd);    hdcbackground = ::createcompatibledc(hwindc); // "global"  hbitmap hbm = ::createcompatiblebitmap(hwindc, rect.right, rect.bottom);  ::selectobject(hdcbackground, hbm);   setbkmode(hdcbackground, transparent);  selectobject(hdcbackground, hfont[hf_default]);  selectobject(hdcbackground, hbrush[hb_topbg]);  selectobject(hdcbackground, hpen[hp_thinborder]);   // draw  rectangle(hdcbackground, 0, 0, rect.right, 20);  selectobject(hdcbackground, hbrush[hb_lowbg]);  rectangle(hdcbackground, 50, 20, rect.right, 40);     // ??? clean after works  releasedc(hwnd, hwindc); }

i call function once, , in timer bitblt() hdcbackground screens hdc. when test out, draws both rectangles, 1px border (as pen set as,) there no color, black , white.

the brushes , such fine, not getting color. rgb on brushes (25,25,25) , (65,65,65), dark grey.

any ideas? thanks.


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