Write Text On Desktop Background (in Windows OS)

[melinda123]

Hi,

I want to write text on the desktop background that updates itself every X seconds.

Can someone show me simple sample C/C++ code how to write for example text "Hello" on desktop background.


Best regards

[ninja9578]

I don't see this being any harder than writing text on a window. But instead of using a clientDC, you would use the screenDC. Look up device contexts on windows.

[melinda123]

Any piece of code i.e. example using screenDC for this purpose?

What I need is possibility to change text font and that text written on desktop stays even if we move other windows, mouse etc over screen.

This is what I try but this way I can not play with text font and text disappear after moving other windows, mouse... over screen:

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int DrawOnSC(char szBuffer[], int bottom, int left, int right, int top, RECT& rect, HDC& hdc, HWND& hwnd, int& iLength) {

SetRect(&rect, bottom, left, right + 34, top + 34);
DrawText(hdc, szBuffer, iLength, &rect, 32);

return 0;
}


int main()
{
RECT rect;
TCHAR szBuffer[50] = {0}; // Text to be outputted
HWND hWnd = GetActiveWindow();
HDC hdc = ::GetWindowDC(NULL);
int iLength = 0;

iLength = wsprintf(szBuffer, "Hello World!");
DrawOnSC(szBuffer, 50, 50, 150, 50, rect, hdc, hWnd, iLength); //function call

return 0;
}
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Anny suggestions how to be abble to change text font and that text stays over other windows i.e. always in front of screen?


Thanks in advance